229 citations · 1.1k across the 16 of their papers we have counts for
16 papers
On Calibrations using the Crab Nebula and Models of the Nebular X-ray Emission
M. C. Weisskopf, M. Guainazzi, K. Jahoda +5
Motivated by a paper (Kirsch et al. 2005) on possible use of the Crab Nebula as a standard candle for calibrating X-ray response functions, we examine consequences of intrinsic dep…
Does the Blazar Gamma-Ray Spectrum Harden with Increasing Flux? Analysis of 9 Years of EGRET Data
Giridhar Nandikotkur, Keith M. Jahoda, R. C. Hartman +5
The Energetic Gamma-Ray Experiment Telescope (EGRET) on the Compton Gamma-Ray Observatory (CGRO) discovered gamma-ray emission from more than 67 blazars during its 9 yr lifetime. W…
The spectrum of the cosmic X-ray background observed by RTXE/PCA
M. Revnivtsev, M. Gilfanov, R. Sunyaev +2
We have analyzed a large set of RXTE/PCA scanning and slewing observations performed between April 1996 and March 1999. We obtained the 3-20 keV spectrum of the cosmic X-ray backgr…
The imaging X-ray detector for Lobster-ISS
J. K. Black, A. N. Brunton, N. P. Bannister +2
Lobster-ISS is a revolutionary astrophysical X-ray all-sky monitor scheduled for deployment as an attached payload on the International Space Station (ISS) in 2009. Using a new wid…
X-ray spectral variability of the Seyfert galaxy NGC 4051
G. Lamer, I. M. McHardy, P. Uttley +1
We report on the X-ray spectral variability of the Seyfert 1 galaxy NGC 4051 observed with the Rossi X-ray Timing Explorer (RXTE) during a 1000 day period between May 1996 and Marc…
The 2-10 keV XRB dipole and its cosmological implications
C. A. Scharf, K. Jahoda, M. Treyer +3
The hard X-ray (>2 keV) emission of the local and distant Universe as observed with the HEAO1-A2 experiment is reconsidered in the context of large scale cosmic structure. Using al…