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- Goddard Space Flight CenterUS884 papers
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48 papers · 2 filters
A Non-Triggered Burst Supplement to the BATSE Gamma-Ray Burst Catalogs
J. M. Kommers, W. H. G. Lewin, C. Kouveliotou +4
The Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory detected gamma-ray bursts (GRBs) with a real-time burst detection (or "trigger") system runni…
Properties of the Chandra Sources in M81
Allyn F. Tennant, Kinwah Wu, Kajal K. Ghosh +2
The Chandra X-ray Observatory obtained a 50-ks observation of the central region of M81 using the ACIS-S in imaging mode. The global properties of the 97 x-ray sources detected in…
Chandra Grating Spectroscopy of the Seyfert Galaxy Ton S180
T. J. Turner, I. M. George, T. Yaqoob +6
This paper presents results from spectral observations of Ton S180 using Chandra and ASCA. The data confirm the presence of the soft excess but the Chandra LETG spectrum reveals it…
X-Ray Constraints on the Warm_hot Intergalactic Medium
K. D. Kuntz, S. L. Snowden, R. F. Mushotzky
Three observational constraints can be placed on a warm-hot intergalactic medium (WHIM) using \rosat PSPC pointed and survey data, the emission strength, the energy spectrum, and t…
On the Nature of AX J2049.6+2939 and AX J2050.0+2914
Emi Miyata, Kouji Ohta, Kenichi Torii +4
AX J2049.6+2939 is a compact X-ray source in the vicinity of the southern blow-up region of the Cygnus Loop supernova remnant (Miyata et al. 1998a). This source was the brightest X…
The Discovery of an Outburst and Pulsed X-ray Flux from SMC X-2 from RXTE Observations
R. H. D. Corbet, F. E. Marshall, M. J. Coe +2
Rossi X-ray Timing Explorer All Sky Monitor observations of SMC X-2 show that the source experienced an outburst in January to April 2000 reaching a peak luminosity of greater than…