| Dr. Steve Snowden
snowden@riva.gsfc.nasa.gov
|
|
| Dr. Steve Snowden
snowden@riva.gsfc.nasa.gov
|
POSITIONS HELD:
RESEARCH EXPERIENCE:
MAJOR PROJECTS:
GUEST INVESTIGATOR: XMM-Newton, Chandra, ROSAT, Parkes
SCIENTIFIC INVESTIGATIONS (accepted proposals):
COMMUNITY SERVICE:
EDUCATIONAL AND OUTREACH EFFORTS:
COMMITTEES:
PROFESSIONAL SOCIETIES:
HONORS AND AWARDS:
PUBLICATIONS IN REFEREED JOURNALS
1986 ``Observations of the Soft X-ray Diffuse
Background at 0.1 KeV''
J. J. Bloch, K. Jahoda, M. Juda, D. McCammon, W. T. Sanders, and
S. L. Snowden, in The Astrophysical Journal (Letters),
308, L59-L62.
1990 ``A Model for the Distribution of Material Generating the
Soft X-ray Diffuse Background''
S. L. Snowden, D. P. Cox, D. McCammon, and W. T. Sanders, in The
Astrophysical Journal, 354, 211-219.
1990 ``The ROSAT Diffuse Background Survey''
S. L. Snowden and J. H. M. M. Schmitt,
in Astrophysics and Space Science, 171, 207-212.
1990 ``Contributions of Late-type Dwarf Stars to the
Soft X-ray Diffuse Background''
J. H. M. M. Schmitt and S. L. Snowden, in The Astrophysical Journal,
361, 207-214.
1990 ``A Color Gradient in the Soft X-ray Diffuse Background''
S. L. Snowden, J. H. M. M. Schmitt, and B. C. Edwards,
in The Astrophysical Journal, 364, 118-122.
1991 ``Limits on the Density of Neutral Gas Within 100 Parsecs
from Observations of the Soft X-ray Background''
M. Juda, J. J. Bloch, B. C. Edwards, D. McCammon, W. T. Sanders,
S. L. Snowden, and J. Zhang,
in The Astrophysical Journal, 367, 182-185.
1991 ``The First Soft X-ray Image of the Moon''
J. H. M. M. Schmitt, S. L. Snowden, B. Aschenbach, G. Hasinger,
E. Pfeffermann, P. Predehl, and J. Trümper, in Nature, 349,
583-587.
1991 ``Simulated ROSAT Observations of Clusters of Galaxies''
R. G. Cruddace, G. Hasinger, J. Trümper, J. H. M. M. Schmitt,
G. D. Hartner, C. Rosso, and S. L. Snowden, in Experimental Astronomy,
1, 365-388.
1991 ``The Boron Filter for the ROSAT X-ray Telescope''
K.-H. Stephan, J. H. M. M. Schmitt, S. L. Snowden, H. J. Maier, and D. Friscke,
in Nuclear Instruments and Methods in Physics Research, A303,
196-203.
1991 ``ROSAT Detection of an X-ray Shadow in the 1/4 keV
Diffuse Background in Draco''
S. L. Snowden, U. Mebold, W. Hirth, U. Herbstmeier, and J. H. M. M. Schmitt,
in Science, 252, 1529-1532.
1992 ``The Particle Background of the ROSAT PSPC''
S. L. Snowden, P. P. Plucinsky, U. Briel, G. Hasinger, and E. Pfeffermann,
in The Astrophysical Journal, 393, 819-828.
1992 ``Lunar Occultation Observation of the X-ray Source GX 5-1''
P. Predehl, J. H. M. M. Schmitt, and S. L. Snowden, in Science,
257, 935-937.
1992 ``ROSAT Wide Field Camera Mini-Survey of the Diffuse Sky
Background in 100-180 eV Soft X-rays''
R. Lieu, J. J. Quenby, S. D. Sidher, T. J. Sumner, R. Willingale, R. G. West,
S. L. Snowden, and K. Bickert, in The Astrophysical Journal, 397,
158-164.
1993 ``The Scattered Solar X-ray Background of the
ROSAT PSPC''
S. L. Snowden and M. J. Freyberg, in The Astrophysical Journal,
404, 403-411.
1993 ``The X-ray Shadow of the High Latitude Molecular Cloud MBM 12''
S. L. Snowden, D. McCammon, and F. Verter, in The Astrophysical Journal
(Letters), 409, L21-L24.
1993 ``An Updated Calibration of the ROSAT PSPC Particle
Background''
P. P. Plucinsky, S. L. Snowden, G. Hasinger, U. Briel, and
E. Pfeffermann, in The Astrophysical Journal, 418, 519-531.
1994 ``Analysis of ROSAT XRT/PSPC Observations of Extended
Objects and the Diffuse Background''
S. L. Snowden, D. McCammon, D. N. Burrows, and J. A. Mendenhall, in
The Astrophysical Journal, 424, 714-728.
1994 ``Soft X-ray and H I Surveys of the Low
NH Region in Ursa Major''
S. L. Snowden, G. Hasinger, K. Jahoda, F. J. Lockman, D. McCammon, and
W. T. Sanders, in The Astrophysical Journal, 430, 601-609.
1994 ``An X-ray Image of the LMC''
S. L. Snowden and R. Petre, in The Astrophysical Journal,
(Letters), 436, L123-L126.
1995 ``ROSAT Survey Observation of the Eridanus Enhancement''
S. L. Snowden, B. Aschenbach, E. Pfeffermann, D. N. Burrows, and
W. T. Sanders, in The Astrophysical Journal, 439, 399-404.
1995 ``The Soft X-ray Background towards the High-Velocity-Cloud
Complex M''
U. Herbstmeier, U. Mebold, S. L. Snowden, D. Hartmann, W. B. Burton,
P. Moritz, P. M. W. Kalberla, and R. Egger, in
Astronomy and Astrophysics, 298, 606-623.
1995 ``Diffuse X-ray Emission from M101''
S. L. Snowden and W. Pietsch, in The Astrophysical Journal, 452,
627-633.
1995 ``X-ray Morphology, Kinematics, and Geometry of the Eridanus
Soft X-ray Enhancement''
Z. Guo, D. N. Burrows, W. T. Sanders, S. L. Snowden, and B. E. Penprase, in
The Astrophysical Journal, 453, 256-263.
1995 ``First Maps of the Soft X-ray Diffuse Background from the
ROSAT XRT/PSPC All-Sky Survey''
S. L. Snowden, M. J. Freyberg, J. H. M. M. Schmitt, W. Voges, J. Trümper,
R. J. Edgar, D. McCammon, P. P. Plucinsky, and W. T. Sanders,
in The Astrophysical Journal, 454, 643-653.
1995 ``The Large-Scale Structure of the Soft X-ray Background,
I: Clusters of Galaxies''
A. Soltan, G. Hasinger, R. Egger, S. Snowden, and J. Trümper, in
Astronomy and Astrophysics, 305, 17-32.
1996 ``An Updated Calibration of the ROSAT PSPC Particle Background
for the Analysis of Diffuse and Extended Sources: Erratum''
P. P. Plucinsky, S. L. Snowden, U. Briel, G. Hasinger, and
E. Pfeffermann, in The Astrophysical Journal, 458, 861.
1996 ``ROSAT Survey Observations of the Monogem Ring''
P. P. Plucinsky, S. L. Snowden, B. Aschenbach, R. Egger, R. J. Edger, and
D. McCammon, in The Astrophysical Journal, 463, 224-245.
1996 ``Limits to Soft X-ray Diffuse Emission from Several Nearby
Spiral Galaxies''
W. Cui, D. McCammon, W. T. Sanders, S. L. Snowden, and D. S. Womble,
in The Astrophysical Journal, 468, 102-116.
1996 ``Limits on the 1/4 keV Extragalactic X-ray Background''
W. Cui, D. McCammon, W. T. Sanders, S. L. Snowden, and D. S. Womble,
in The Astrophysical Journal, 468, 117-120.
1996 ``The Energy-Dependent Temporal Variation of the ROSAT PSPC
Gain''
M. A. Prieto, G. Hasinger, and S. L. Snowden, in Astronomy and
Astrophysics Supplement, 120, 187-193.
1996 ``A Catalogue of White Dwarfs Detected in the ROSAT All-Sky
Survey''
T. Fleming, S. L. Snowden, E. Pfeffermann, U. Briel, and J. Greiner, in
Astronomy and Astrophysics, 316, 147-154.
1996 ``ROSAT Soft X-ray Maps''
S. L. Snowden, M. J. Freyberg, J. H. M. M. Schmitt, W. Voges, J. Trümper,
R. J. Edgar, D. McCammon, P. P. Plucinsky, and W. T. Sanders,
IAU Circular #6419.
1997 ``Evidence for an X-ray Emitting Galactic Bulge: Shadows Cast
by Distant Molecular Clouds''
S. Park, J. P. Finley, S. L. Snowden, and T. M. Dame in The Astrophysical
Journal, Letters, 476, L77-L80.
1997 ``The Large-Scale Structure of the Soft X-ray Background,
II: Galaxies''
A. Soltan, G. Hasinger, R. Egger, S. L. Snowden, and J. Trümper, in
Astronomy and Astrophysics, 320, 705-716.
1997 ``Uncovering A Supernova Remnant Hidden Near LMCX-1''
Y.-H. Chu, R. C. Kennicutt, S. L. Snowden, R. C. Smith, R. M. Williams, and
D. Bomans, in The Proceedings of the Astronomical Society of the Pacific,
109, 554-558.
1997 ``X-ray Shadows by High-Latitude Molecular Clouds I:
Cartography''
K. D. Kuntz, S. L. Snowden, and F. Verter, in The Astrophysical
Journal, 484, 245-255.
1997 ``The ROSAT-HRI X-Ray Survey of the Cygnus Loop''
N. A. Levenson, J. R. Graham, B. Aschenbach, W. P. Blair, W. Brinkmann,
J.-U. Busser, R. Egger, R. A. Fesen, J. J. Hester, S. M. Kahn, R. I. Klein,
C. F. McKee, R. Petre, R. Pisarski, J. C. Raymond, and S. L. Snowden, in
The Astrophysical Journal, 484, 304-312.
1997 ``ROSAT Survey Diffuse Background Maps, Paper II''
S. L. Snowden, R. Egger, M. J. Freyberg, D. McCammon, P. P. Plucinsky,
W. T. Sanders, J. H. M. M. Schmitt, J. Trümper, and W. Voges, in The
Astrophysical Journal, 485, 125-135.
1997 ``Small-Scale Variations in the 1/4 keV X-Ray Background
along the Galactic Plane''
S. Park, J. P. Finley, & S. L. Snowden, in The Astrophysical Journal,
491, 165-171.
1998 ``Progress on Establishing the Spatial Distribution of Material
Responsible for the 1/4 keV SXRB, Local and Halo Components''
S. L. Snowden, R. Egger, D. Finkbeiner, M. J. Freyberg, and
P. P. Plucinsky, The Astrophysical Journal, 493, 715-729.
1998 ``The Calibration of the ROSAT HRI Particle Background''
S. L. Snowden, in The Astrophysical Journal, Supplement, 117,
233-247.
1998 ``X-ray Shadows of the Draco Nebula. A New Method to Determine
Total Hydrogen Column Densities''
P. Moritz, A. Wennmacher, U. Herbstmeier, U. Mebold, R. Egger, and
S. L. Snowden, in Astronomy and Astrophysics, 338, 682-696.
1999 ``The Large-Scale H I Structure of the Small Magellanic Cloud''
S. Stanimirovic, L. Staveley-Smith, J. M. Dickey, R. J. Sault, and
S. L. Snowden, in Monthly Notices of the Royal Astronomical Society,
302, 417-436.
1999 ``The Supergiant Shell LMC 2: I. The Kinematic and Physical
Structure''
S. D. Points, Y.-H. Chu, S. Kim, R. C. Smith, S. L. Snowden, W. Brandner,
R. A. Gruendl, in The Astrophysical Journal, 518, 298-323.
1999 ``X-rays from NGC 4395, the Lowest Luminosity Seyfert 1
Nucleus''
E. C. Moran, A. V. Filippenko, L. C. Ho, J. C. Shields, T. Belloni,
A. Comastri, S. L. Snowden, and R. A. Sramek, in Publications of the
Astronomical Society of the Pacific, 111, 801-808.
1999 ``X-ray and Extreme Ultraviolet Emission from Comet P/Encke
1997''
C. M. Lisse, K. Dennerl, M. Desch, J. Englhauser, F. E. Marshall,
R. Petre, S. L. Snowden, and J. Trümper, in Icarus, 142,
in press.
1999 ``The ROSAT PSPC Temporal/Spatial Gain Correction''
S. L. Snowden, T. J. Turner, and M. J. Freyberg, in The Astrophysical
Journal Supplement, submitted.
1999 ``A Catalog of Soft X-ray Shadows''
S. L. Snowden, M. J. Freyberg, K. D. Kuntz, and W. T. Sanders, in The
Astrophysical Journal Supplement, submitted.
1999 ``RXJ050736-6847.8: a Large Supernova Remnant Around an
X-ray Binary in the Large Magellanic Cloud''
Y.-H. Chu, S. Kim, S. D. Points, R. Petre, and S. L. Snowden, in The
Astrophysical Journal, submitted.
1999 ``Deconstructing the Spectrum of the Diffuse X-ray Background''
K. D. Kuntz and S. L. Snowden, in The Astrophysical Journal,
submitted.
1999 ``X-ray Shadows by High-Latitude Molecular Clouds II:
Implications for the 100 um to H Nucleon Ratio''
K. D. Kuntz, F. Verter, and S. L. Snowden, in The Astrophysical Journal,
submitted.
1999 ``The Pathological Nature of the Virgo Cluster Region at 1/4 keV, A
Cautionary Tale''
S. L. Snowden, D. Finkbeiner, U. Hwang, and R. Mushotzky, in The
Astrophysical Journal, in preparation.
1999 ``A Soft X-ray Study of the SMC Region''
S. L. Snowden, et al., in preparation.
1999 ``X-ray and Extreme Ultraviolet Emission from Comet
P/Tempel-Tuttle 1998''
C. M. Lisse, K. Dennerl, M. Desch, J. Englhauser, F. E. Marshall,
T. G. Northrop, R. Petre, S. L. Snowden, and J. Trümper,
in Science, in preparation.
INVITED PAPERS IN CONFERENCE PROCEEDINGS
* indicates refereeing
1991 ``The Soft X-ray Background''
S. L. Snowden, in Proceedings of the Workshop on Astronomy and
Astrophysics, Hot Gas in the Galaxy, RAL-91-082, ed. P. M. Gondhalekar
(Chilton DIDCOT:Rutherford Appleton Laboratory), 28.
1993* ``Implications of ROSAT Observations for the Hot Local
Bubble''
S. L. Snowden, in Advances in Space Research, 13(12), 103.
1995 ``The Interstellar Medium and the Soft X-ray Background''
S. L. Snowden, in Röntgenstrahlung from the Universe, MPE Report
#263, ed. H. U. Zimmermann, J. E. Trümper, and H. Yorke
(Garching:MPE), 299.
1998* ``A New View of the LHB and 1/4 keV X-ray Halo''
S. L. Snowden, in Proceedings of IAU Colloquium No. 166, The Local Bubble
and Beyond, eds. D. Breitschwerdt, M.J. Freyberg, and J. Trümper,
Lecture Notes in Physics 506 (Spinger:Berlin), 103-112.
1998 ``X-ray Halos of the Milky Way and Magellanic Clouds''
S. L. Snowden, in Galactic Halos: A UC Santa Cruz Workshop,
ed. D. Zaritsky (San Francisco:Astronomical Society of the Pacific), 127-134.
1998 ``106 K - 107 K Plasma in the Magellanic Clouds''
S. L. Snowden, in Proceedings of IAU Symposium No. 190, New Views of
the Magellanic Clouds, eds. Y.-H. Chu, N. Suntzeff, J. Hesser, and
D. Bohlender (San Francisco:Astronomical Society of the Pacific), 4.
CONTRIBUTED PAPERS IN CONFERENCE PROCEEDINGS
* indicates refereeing
1984 ``Ultrasoft X-ray Background Observations of the Local ISM''
W. T. Sanders, S. L. Snowden, J. J. Bloch, M. Juda, K. Jahoda, and
D. McCammon, in Proceedings of IAU Colloquium No. 81, The Local
Interstellar Medium,
eds. Y. Kondo, F. Bruhweiler, and B. D. Savage (Washington:NASA),
222-225.
1986 ``Perspective on the Local Interstellar Medium''
D. P. Cox and S. L. Snowden, in Advances in Space Research, 6(2),
97-107.
1988 ``The SHEAL Diffuse X-ray Spectrometer Experiment''
W. T. Sanders, S. L. Snowden, and R. J. Edgar, in Proceedings of IAU
Colloquium No. 115, High Resolution X-Ray Spectroscopy of Cosmic Plasmas,
eds. P. Gorenstein and M. V. Zombeck (Cambridge:Cambridge University Press),
376-379.
1989 ``1/4 keV Diffuse Background and the Local Interstellar Medium''
S. L. Snowden and W. T. Sanders, in Proceedings of IAU Colloquium
No. 120, Structure and Dynamics of the Interstellar Medium,
eds. G. Tenorio-Tagle, M. Moles, J. Melnick (Berlin:Springer Verlag), 536.
1989 ``Galactic Background Radiation in the 78 to 111 eV Band''
W. T. Sanders, J. J. Bloch, B. C. Edwards, K. Jahoda, M. Juda,
D. McCammon, and S. L. Snowden, in Proceedings of IAU Symposium No. 139,
Galactic and Extragalactic Background Radiation, eds. S. Bowyer and Ch.
Leinert (Dordrecht:Kluwer Academic Publishers), 241-242.
1992 ``Mission Planning With ROSAT''
S. L. Snowden and J. H. M. M. Schmitt, in Data Analysis in Astronomy IV,
eds. V. Di Gesu et al. (New York:Plenum), 121-129.
1992 ``Shadows in the Soft X-ray Background''
S. L. Snowden, in The X-ray Background, eds. X. Barcons and A. C.
Fabian (Cambridge:Cambridge University Press), 54-58.
1992 ``A Deep ROSAT observation of the Highly Variable AGN
1E1403+5439''
T. Belloni and S. L. Snowden, in 2nd Garching Workshop on the X-ray
Emission from Active Galactic Nuclei and the Cosmic X-ray Background,
MPE Report 235, eds. W. Brinkmann and J. Trümper (Garching:MPE), 187-190.
1992 ``X-ray Shadows and the 3-D Structure of the Local ISM in a
High-Latitude Region''
U. Herbstmeier, J. Kerp, S. L. Snowden, and U. Mebold, in EIPC
Workshop: Star Forming Galaxies and their Interstellar Media, (Elba, Italy).
1992 ``The Diffuse X-ray Spectrometer Experiment''
W. T. Sanders, R. J. Edgar, M. Juda, W. L. Kraushaar, D. McCammon, S. L.
Snowden, J. Zhang, and M. Skinner, SPIE #1743, 60.
1993 ``Demonstration of Procedures Adopted for Diffuse Analysis of
ROSAT Pointed Observations Toward the Draco Nebula''
J. A. Mendenhall, D. N. Burrows, D. McCammon, and S. L. Snowden, in
The Soft X-ray Cosmos - ROSAT Science Symposium, ed. E. M.
Schlegel & R. Petre, AIP Conference Proceedings, 313, 223-232.
1993 ``Preliminary Results from the Diffuse X-ray Spectrometer''
W. T. Sanders, R. J. Edgar, W. L. Kraushaar, D. McCammon, S. L. Snowden,
J. Zhang, M. A. Skinner, K. Jahoda, R. Kelly, A. Smale, C. Stahle, and
A. Szymkowiak, SPIE #2006, 221.
1994 ``ROSAT and BATSE observations of GRS1915+105''
J. Greiner, S. Snowden, B. A. Harmon, C. Kouveliotou, and W. Paciesas,
Proc. of 2nd Compton Symposium, AIP Conference Proceedings, 304,
260-264.
1995 ``Fluctuations in the Soft X-ray Background''
C. R. Barber, R. S. Warwick, and S. L. Snowden, in Röntgenstrahlung
from the Universe, MPE Report #263, ed. H. U. Zimmermann, J. E. Trümper,
and H. Yorke (Garching:MPE), 319-320.
1996 ``HRI Survey of the Large Magellanic Cloud''
Y.-H. Chu, S. L. Snowden, and T. Chang, HEAD Meeting of the American
Astronomical Society (San Diego), ROSAT Newsletter #13,
ed. S. L. Snowden (NASA:GSFC), 26.
1996 ``An HRI Mosaic of the SMC''
S. L. Snowden and Y.-H. Chu, HEAD Meeting of the American Astronomical
Society (San Diego), ROSAT Newsletter #13, ed. S. L. Snowden
(NASA:GSFC), 30.
1996 ``Tracing the Interstellar Medium in Ophiuchus Across 14
Orders of Magnitude in Frequency''
S. W. Digel, S. D. Hunter, and S. L. Snowden, in Proceedings of the
179th Symposium of the International Astrophysical
Union, New Horizons
from Multi-Wavelength Sky Surveys, eds. D. A. Golombek, J. J. E. Hayes,
and H. E. Payne (Kluwer Academic Publishers:Dordrecht), 175.
1997* ``Tracing Small-Scale Fluctuations in the Soft X-ray
Background''
R. Warwick, I. Hutchinson, R. Willingale, K. D. Kuntz, and S. L. Snowden,
in Proceedings of IAU Colloquium No. 166, The Local Bubble and Beyond,
eds. D. Breitschwerdt, M. J. Freyberg, and J. Trümper, Lecture Notes in
Physics 506 (Spinger:Berlin), 321-324.
1997* ``Intensity Variations of the Soft X-ray Background: the
Boundary Structure of the Local Hot Bubble at Low Galactic Latitudes''
S. Park, J. P. Finley, and S. L. Snowden, in Proceedings of IAU
Colloquium No. 166, The Local Bubble and Beyond, eds. D. Breitschwerdt,
M. J. Freyberg, and J. Trümper, Lecture Notes in Physics 506
(Spinger:Berlin), 325-328.
1997* ``Small Scale 1/4 keV Fluctuations due to the Local
Hot Bubble''
K. D. Kuntz, S. L. Snowden, and R. S. Warwick, in Proceedings of IAU
Colloquium No. 166, The Local Bubble and Beyond, eds. D. Breitschwerdt,
M. J. Freyberg, and J. Trümper, Lecture Notes in Physics 506
(Spinger:Berlin), 329-332.
1997* ``XBSS: the X-Ray Background Spectroscopic Survey''
W. T. Sanders, D. P. Cox, D. McCammon, R. J. Paulos, N. S. Brickhouse,
R. J. Edgar, J. C. Raymond, D. A. Liedahl, E. A. Boldt, K. Jahoda,
T. Kallman, R. L. Kelley, R. F. Mushotzky, F. S. Porter, R. L. Shelton,
R. K. Smith, S. L. Snowden, C. K. Stahle, A. E. Szymkowiak, and N. E. White,
SPIE #3114, 636.
1998* ``ROSAT HRI Survey of the Large Magellanic Cloud''
Y.-H. Chu and S. L. Snowden, Astronomische Nachrichten, 319, 101.
1998* ``XBSS - The X-Ray Background Spectroscopic Survey''
W. T. Sanders, E. A. Boldt, N. S. Brickhouse, D. P. Cox, R. J. Edgar,
K. Jahoda, T. Kallman, R. L. Kelley, D. A. Liedahl, D. McCammon,
R. F. Mushotzky, R. J. Paulos, J. C. Raymond, R. L. Shelton, R. K. Smith,
S. L. Snowden, C. K. Stahle, A. E. Szymkowiak, and N. E. White,
Astronomische Nachrichten, 319, 151.
1998 ``The Kinematic Structure of the Supergiant Shell LMC2''
S. D. Points, Y.-H. Chu, R. A. Gruendl, S. Kim, R. C. Smith, S. L. Snowden, and
W. Brandner, in Proceedings of IAU Symposium No. 190, New Views of the
Magellanic Clouds, eds. Y.-H. Chu, N. Suntzeff, J. Hesser, and D. Bohlender
(San Francisco:Astronomical Society of the Pacific), 90.
1998 ``Fractal Structure in the Interstellar Medium of the SMC''
S. Stanimirovic, L. Staveley-Smith, R. J. Sault, J. M. Dickey, and S. L.
Snowden, in Proceedings of IAU Symposium No. 190, New Views of the
Magellanic Clouds, eds. Y.-H. Chu, N. Suntzeff, J. Hesser, and D. Bohlender
(San Francisco:Astronomical Society of the Pacific), 61.
1998 ``The XMM GOF at Goddard Space Flight Center''
S. L. Snowden, presented at Science With XMM, The First XMM Workshop, ESTEC,
Noordwijk, The Netherlands, Published on the WWW at
http://astro.estec.esa.nl/XMM/news/ws1_top.html, in press.
1994 ``ROSAT Users' Handbook''
U. G. Briel, B. Aschenbach, G. Hasinger, H. Hippmann, E. Pfeffermann,
P. Predehl, J. H. M. M. Schmitt, W. Voges, U. Zimmermann, I. M. George,
S. L. Snowden, T.J. Turner, L. David, F. R. Harnden Jr, K. E. Kearns,
M.V. Zombeck, M. A. Barstow, J. P. Osborne, J. P. Pye, M. Watson, R. G. West,
and R. Willingale, MPE ROSAT Guest Observer Facility
1994 ``Cookbook for Analysis Procedures for ROSAT XRT/PSPC
Observations of Extended Objects and the Diffuse Background''
S. L. Snowden, US ROSAT Science Data Center, NASA/GSFC.
1994 ``A Guide to ROSAT TREND Data''
G. Reichert and S. L. Snowden, US ROSAT Science Data Center, NASA/GSFC.
1996 Co-Editor, 1995 GSFC Code 666 contribution to the AAS Annual Observatory Report. Bulletin of the American Astronomical Society, 28(1).
1996 ``The ROSAT High Resolution Imager (HRI) Calibration
Report''
L. P. David, F. R. Harnden, K. E. Kearns, and M. V. Zombeck with J. D.
Silverman, D. E. Harris, S. L. Snowden, and F. A. Primini, US ROSAT
Science Data Center, US ROSAT Science Data Center, SAO.
1996 ``Proceedings of the San Diego AAS HEAD Conference Session
on the US Long-Term Observing Plan for ROSAT''
Edited by S.L. Snowden, US ROSAT Science Data Center, NASA/GSFC.
1997 Co-Editor, 1996 GSFC Code 666 contribution to the AAS Annual Observatory Report. Bulletin of the American Astronomical Society, 29(1).
1998 Co-Editor, 1997 GSFC Code 662 contribution to the AAS Annual Observatory Report. Bulletin of the American Astronomical Society, 30(1), 363-386.
1998 ``Spectral Calibration of the ROSAT HRI''
A. H. Prestwich, J. Silverman, J. McDowell, P. Callanan, and S. L. Snowden,
US ROSAT Science Data Center, CfA.
1998 ``Cookbook for Analysis Procedures for ROSAT XRT
Observations of Extended Objects and the Diffuse Background, Part I:
Individual Observations''
S. L. Snowden and K. D. Kuntz, US ROSAT Science Data Center, NASA/GSFC.
1998 ``Cookbook for Analysis Procedures for ROSAT XRT
Observations of Extended Objects and the Diffuse Background, Part II:
Mosaics''
K. D. Kuntz and S. L. Snowden, US ROSAT Science Data Center, NASA/GSFC.
1998 ``XMM Project Data Management Plan''
S. L. Snowden, US XMM Guest Observer Facility, NASA/GSFC.
1999 Co-Editor, 1998 GSFC Code 662 contribution to the AAS Annual Observatory Report. Bulletin of the American Astronomical Society, 31(1), 319-340.
1999 ``The QuickSim Handbook''
S. L. Snowden, US XMM Guest Observer Facility, NASA/GSFC.
2000 Co-Editor, 1999 GSFC Code 662 contribution to the AAS Annual Observatory Report. Bulletin of the American Astronomical Society, 32(1), in preparation.
1989 ``X-ray Observations of the Local Interstellar Medium''
S. L. Snowden, Ringberg Workshop on: Hot Plasma in Interstellar and
Intergalactic Media (Ringberg, Germany), November.
1992 ``A Preliminary Look at the SXRB from the ROSAT All-Sky
Survey''
S. L. Snowden, P. P. Plucinsky, D. McCammon, M. J. Freyberg, J. H. M. M.
Schmitt, and J. Trümper, 179th American Astronomical Society Meeting
(Atlanta), January, BAAS, 23(4), 1400.
1992 ``Background Subtraction and Exposure Correction of ROSAT
PSPC Observations''
S. L. Snowden, ROSAT Data Analysis and Science Workshop (Boston),
November.
1993 ``Probing the ISM with ROSAT''
S. L. Snowden, RAS National Astronomy Meeting (Leicester), March.
1996 ``Soft X-ray Mosaics of the Large and Small Magellanic Clouds''
S. L. Snowden, 188th American Astronomical Society Meeting (Madison), June,
BAAS, 28(2) (51.03), 900.
1998 ``Diffuse Background Studies''
S. L. Snowden, 5th Meeting of the XMM SSC SAG, Munich, May.
UNPUBLISHED CONTRIBUTED PAPERS
1985 ``Ultrasoft X-ray Background Observations Towards the North
Galactic Pole''
J. J. Bloch, K. Jahoda, M. Juda, D. McCammon, W. T. Sanders, and
S. L. Snowden, 165th American Astronomical Society Meeting (Tucson), January,
BAAS, 16(4), 910.
1987 ``Observations of the Soft X-ray Diffuse Background
Below 0.2 keV''
M. Juda, J. J. Bloch, D. McCammon, W. T. Sanders, and S. L. Snowden,
170th American Astronomical Society Meeting (Vancouver, Canada), June,
BAAS, 19(2), 722.
1992 ``Generation of Energy Dependent Exposure Maps for ROSAT
PSPC Analysis''
J. A. Mendenhall, S. L. Snowden, and D. N. Burrows, 180th American
Astronomical Society Meeting (Columbus), June.
1992 ``Generation of Energy Dependent Exposure Maps for ROSAT
PSPC Analysis''
J. A. Mendenhall, S. L. Snowden, and D. N. Burrows,
ROSAT Data Analysis Workshop (Boston), November.
1992 ``The ROSAT All-Sky Survey Maps of the Cosmic X-Ray Background''
M. J. Freyberg, S. L. Snowden, P. P. Plucinsky, and J. H. M. M. Schmitt,
Astronomische Gesellschaft Abstract Series, No.7, 26.
1992 ``The Moon in the ROSAT All-Sky Survey: A Monitor of the
Solar X-Ray Flux''
M. J. Freyberg, J. H. M. M. Schmitt, and S. L. Snowden,
Astronomische Gesellschaft Abstract Series, No.7, 154.
1992 ``ROSAT Survey Observations of the Monogem Ring''
P. P. Plucinsky, S. L. Snowden, B. Aschenbach, R. Egger, R. Edger, and
D. McCammon, 181th American Astronomical Society Meeting (Phoenix), January,
BAAS, 24(4) (47.01), 1196.
1993 ``ROSAT PSPC Observations of Clouds at High Galactic
Latitude ''
M. Juda, D. McCammon, W. T. Sanders, and S. L. Snowden, 182th American
Astronomical Society Meeting (Berkeley), June, BAAS, 25(2) (61.03), 899.
1993 ``A View of the Diffuse X-ray Sky''
S. L. Snowden, The 1st Annual ROSAT Science Symposium and Data
Analysis Workshop (College Park, MD), November.
1994 ``ROSAT PSPC Mosaic Images of the LMC, SMC, and
Ophiuchus Dark Clouds''
S. L. Snowden, 184th American Astronomical Society Meeting (Minneapolis),
June, BAAS, 26(2) (48.13), 940.
1994 ``Soft X-ray and HI Surveys of the Low NH Region in Ursa
Major''
W. T. Sanders, D. McCammon, F. J. Lockman, K. Jahoda, S. L. Snowden, and
G. Hasinger, 184th American Astronomical Society Meeting (Minneapolis),
June, BAAS, 26(2) (29.15), 904.
1994 ``ROSAT Observations of the Sculptor/Phoenix
Supercluster''
P. P. Plucinsky, R. G. Cruddace, S. L. Snowden, H. MacGillivray, and
G. Hartner, 184th American Astronomical Society Meeting (Minneapolis),
June, BAAS, 26(2) (60.04), 960.
1994 ``Analysis Software for PSPC Observations of Extended
Sources and the Diffuse Background''
S. L. Snowden, Third ROSAT Workshop (MPE/Garching, Germany),
October 26-27.
1994 ``A Status Report of the Spectral Calibration of the
ROSAT PSPC''
S. L. Snowden, Third ROSAT Workshop (MPE/Garching, Germany),
October 26-27.
1994 ``The X-ray Shadow of the Ophiuchus Dark Clouds''
S. L. Snowden, S. Digel, and M. J. Freyberg, HEAD Meeting of the American
Astronomical Society (Napa Valley), November 2-5.
1994 ``A Status Report of the Spectral Calibration of the
ROSAT PSPC''
S. L. Snowden, HEAD Meeting of the American Astronomical Society
(Napa Valley), November 2-5.
1994 ``ROSAT Observations of the NE Region of the Cygnus Loop''
R. L. Pisarski and S. L. Snowden, HEAD Meeting of the American
Astronomical Society (Napa Valley), November 2-5.
1994 ``ROSAT Survey Observations of the Monogem Ring''
P. P. Plucinsky, S. L. Snowden, B. Aschenbach, R. Egger, and D. McCammon,
HEAD Meeting of the American Astronomical Society (Napa Valley), November 2-5.
1994 ``X-ray Morphology, Kinematics, and Geometry of the Eridanus
Soft X-ray Enhancement''
Z. Guo, D. N. Burrows, W. T. Sanders, S. L. Snowden, and B. E. Penprase,
185th American Astronomical Society Meeting (Tucson), January, BAAS,
26(4) (12.15), 1328.
1994 ``The Temperature Distribution of the Cygnus Loop SNR''
R. L. Pisarski and S. L. Snowden, 185th American Astronomical Society Meeting
(Tucson), January, BAAS, 26(4)
1995 ``Structure in the Diffuse X-ray Background Along the Galactic
Plane''
S. Park, J. P. Finley, R. Srinivasan, and S. L. Snowden, 186th American
Astronomical Society Meeting (Pittsburgh), June, BAAS, 27(2)
(36.10), 863.
1996 ``Calibration Status of the ROSAT PSPC''
S. L. Snowden, HEAD Meeting of the American Astronomical Society (San Diego),
29 April - 3 May.
1996 ``Spectral Calibration of the ROSAT HRI''
A. Prestwich, P. Callanan, S. L. Snowden, L. David, and M. Elvis, HEAD
Meeting of the American Astronomical Society (San Diego), 29 April - 3 May.
1996 ``The Virgo Cluster and Pathological Cases of Foreground
Absorption''
S. L. Snowden, Fourth ROSAT Workshop (MPE/Garching, Germany),
5-6 November.
1997 ``Intensity Variations of the Soft X-ray Background: The
Boundary Structure of the Local Hot Bubble at Low Galactic Latitudes''
S. Park, J. P. Finley, and S. L. Snowden, 189th American
Astronomical Society Meeting (Toronto), January, BAAS, (08.01).
1997 ``Spectral Calibration of the ROSAT HRI''
A. Prestwich, P. Callanan, S. L. Snowden, J. McDowell, J. Silverman,
A. Peterchev, L. David, and M. Elvis, 189th American Astronomical Society
Meeting (Toronto), January, BAAS, (09.05).
1997 ``Uncovering a Supernova Remnant Hidden Near LMC X-1''
Y.-H. Chu, R. M. Williams, D. J. Bomans, R. C. Kennicutt, S. L. Snowden,
and R. C. Smith, 189th American
Astronomical Society Meeting (Toronto), January, BAAS, (46.04).
1997 ``The Calibration of the ROSAT HRI Particle Background ''
S. L. Snowden, HEAD Meeting of the American Astronomical Society (Estes
Park, CO), 3 - 7 November.
1997 ``A Soft-Shelled Supernova Remnant''
N. A. Levenson, J. R. Graham, and S. L. Snowden, HEAD Meeting of the
American Astronomical Society (Estes Park, CO), 3 - 7 November.
1997 ``Spectral Calibration of the ROSAT HRI''
A. Prestwich, J. Silverman, J. McDowell, P. Callanan, and S. L. Snowden,
HEAD Meeting of the American Astronomical Society (Estes Park, CO),
3 - 7 November.
1998 ``A ROSAT X-ray Background Survey in the Galactic Plane''
J. N. Bregman, P. M. Knezek, S. L. Snowden, and A. K. D'Onofrio, 191th American
Astronomical Society Meeting (Washington, D.C.), January, BAAS, 29(5)
(50.01), 1293.
1998 ``1/4 keV Fluctuations Due to the Local Hot Bubble''
K. D. Kuntz, S. L. Snowden, and R. S. Warwick, 191th American
Astronomical Society Meeting (Washington, D.C.), January, BAAS, 29(5)
(51.08), 1297.
1998 ``X-ray and Extreme Ultraviolet Emission From Comet
P/Encke 1997''
C. M. Lisse, D. Christian, K. Dennerl, J. Englhauser, J. Trümper, M. Desch,
F. E. Marshall, R. Petre, and S. L. Snowden, 30th American
Astronomical Society, Division of Planetary Sciences Meeting, DPS, (42.07).
1999 ``ROSAT X-ray Sources in the Large Magellanic Cloud ''
S. D. Points, Y.-H. Chu, R. A. Gruendl, and S. L. Snowden, 194th American
Astronomical Society Meeting (Chicago), June, BAAS, 31(3)
(71.25), 947.
1986 ``Neutral Hydrogen and the Spatial Structure of the Diffuse
Soft X-ray Background''
University of Wisconsin - Madison, December.
1988 ``The Soft X-ray Diffuse Background''
Max Planck Institute for Extraterrestrial Physics, February.
1990 ``The Spatial and Spectral Structure of the
Soft X-ray Diffuse Background''
Max Planck Institute for Extraterrestrial Physics, June.
1990 ``A Preview of the ROSAT Survey Diffuse Background''
Max Planck Institute for Extraterrestrial Physics Koncil, October.
1991 ``The ROSAT All-Sky Survey Diffuse Background''
Leicester University, December.
1991 ``The Calibration Status of the ROSAT PSPC''
Leicester University, December.
1992 ``The Calibration Status of the ROSAT PSPC''
NASA ROSAT Working Group, AAS Atlanta, January.
1992 ``The Diffuse Background Analysis of the ROSAT Survey Data
and Shadows in the SXRB''
Los Alamos National Laboratory, January.
1992 ``The Spectral Calibration of the ROSAT PSPC''
Max Planck Institute for Extraterrestrial Physics, January.
1992 ``Implications of the ROSAT All-Sky Survey for the Soft
X-ray Diffuse Background''
Radio Astronomy Institute of Bonn University, February.
1992 ``Shadows in the Soft X-ray Diffuse Background''
Harvard-Smithsonian Center for Astrophysics, November.
1992 ``Shadows in the Soft X-ray Diffuse Background''
Max Planck Institute for Astronomy and Astrophysics, December.
1993 ``Probing the ISM with ROSAT''
Max Planck Institute for Extraterrestrial Physics, April.
1993 ``X-ray observations of the LISM by ROSAT''
GSFC Laboratory for Astronomy and Solar Physics, December.
1994 ``ROSAT observations of the Soft X-ray Background
Radiation''
Johns Hopkins Center for Astrophysical Sciences, February.
1994 ``The ROSAT Sky''
Laboratory for High Energy Astrophysics, NASA/GSFC, May.
1994 ``The ROSAT Sky''
Department of Astronomy, University of Wisconsin - Madison, May.
1994 ``ROSAT and Extended Structures in the Diffuse X-ray Sky''
Department of Physics and Astronomy, Leicester University, October.
1994 ``A Status Report on the Spectral Calibration of the
ROSAT PSPC''
Department of Physics and Astronomy, Leicester University, October.
1994 ``ROSAT Images of the Large and Small Magellanic Clouds
and the Ophiuchus Dark Cloud Region''
Goddard Atrium Teas and Posters, Goddard Space Flight Center, December.
1995 ``The 1/4 keV Background: The Local Hot Bubble, Galactic
Halo, and Beyond''
Northwestern University, May.
1995 ``The Link between the ISM and the SXRB''
Laboratory for High Energy Astrophysics, NASA/GSFC, October.
1996 ``The Galactic X-ray Bulge''
Supernova Remnants and the Interstellar Medium, NASA/GSFC, September.
1997 ``A Clear View of the LHB''
Supernova Remnants and the Interstellar Medium, NASA/GSFC, February.
1998 ``The 1/4 keV Sky, from the Solar Neighborhood to
Clusters of Galaxies''
University of Maryland College Park, April.
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