S
Steven L. Snowden
Researcher at Goddard Space Flight Center
Publications - 68
Citations - 6113
Steven L. Snowden is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: ROSAT & Galaxy. The author has an hindex of 31, co-authored 68 publications receiving 5712 citations. Previous affiliations of Steven L. Snowden include Universities Space Research Association & University of Wisconsin-Madison.
Papers
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Journal ArticleDOI
SOLAR WIND CHARGE EXCHANGE CONTRIBUTION to the ROSAT ALL SKY SURVEY MAPS
Y. Uprety,Y. Uprety,Meng P. Chiao,Michael R. Collier,Thomas E. Cravens,Massimiliano Galeazzi,Dimitra Koutroumpa,Kip D. Kuntz,Rosine Lallement,Susan T. Lepri,Wenhao Liu,Dan McCammon,Kelsey M. Morgan,Frederick S. Porter,K. Prasai,K. Prasai,Steven L. Snowden,N. E. Thomas,Eugenio Ursino,Eugenio Ursino,Brian Walsh +20 more
TL;DR: In this article, a sounding rocket mission is used to estimate the contribution of solar wind charge eXchange (SWCX) to the diffuse X-ray background and to help determine the properties of the Local Hot Bubble.
Proceedings ArticleDOI
The DXL and STORM sounding rocket mission
N. E. Thomas,N. E. Thomas,J. A. Carter,Meng P. Chiao,Dennis J. Chornay,Y. M. Collado-Vega,Michael R. Collier,Thomas E. Cravens,Massimiliano Galeazzi,Dimitra Koutroumpa,Joseph Kujawski,Kip D. Kuntz,Maria Kuznetsova,Susan T. Lepri,Dan McCammon,Kelsey M. Morgan,F. Scott Porter,K. Prasai,A. M. Read,Ina Robertson,Steve Sembay,David G. Sibeck,Steven L. Snowden,Y. Uprety,Brian Walsh +24 more
TL;DR: In this article, the authors used a lobster-eye optics to focus X-rays from a Terrier Mk70 Black Brant IX sounding rocket on the Local Galaxy (DXL) sounding rocket to distinguish the soft X-ray emission due to the Local Hot Bubble (LHB) from that produced via SWCX.
Book ChapterDOI
The hot part of the interstellar medium
TL;DR: In this article, the authors discuss the visual features that allow a supernova to stand out clearly from the background fade: the shock fronts (the interface region between the expanding SNR and the undisturbed ISM), and the hot and relatively dense interior with bright X-ray emission.
Journal ArticleDOI
The Nuclear Spectral Energy Distribution of NGC 4395, The Least Luminous Type 1 Seyfert Galaxy
Edward C. Moran,Alexei V. Filippenko,Luis C. Ho,Joseph C. Shields,Tomaso Belloni,Andrea Comastri,Steven L. Snowden,Richard A. Sramek +7 more
TL;DR: In this paper, the broadband spectral energy distribution (SED) of the galaxy's nucleus was obtained from X-ray, infrared, and radio observations of NGC 4395, which harbors the optically least luminous type 1 Seyfert nucleus.
Proceedings ArticleDOI
The Heliospheric Contribution to the Soft X‐Ray Background Emission
TL;DR: In this article, the authors presented ROSAT 1/4keV and 3/4 keV band all-sky maps of the cosmic soft X-ray emission with the steady state heliospheric and geocoronal components removed via modeling procedures.