157 citations · 747 across the 17 of their papers we have counts for
6 papers · 1 filter
When A Standard Candle Flickers
Colleen A. Wilson-Hodge, Michael L. Cherry, Wayne H. Baumgartner +27
The Crab Nebula is the only hard X-ray source in the sky that is both bright enough and steady enough to be easily used as a standard candle. As a result, it has been used as a nor…
Implication of the observable spectral cutoff energy evolution in XTE J1550-564
Lev Titarchuk, Nikolai Shaposhnikov
The physical mechanisms responsible for production of the non-thermal emission in accreting black holes (BH) should be imprinted in the observational apperances of the power law ta…
Cross-calibration of the X-ray Instruments onboard the Chandra, INTEGRAL, RXTE, Suzaku, Swift, and XMM-Newton Observatories using G21.5-0.9
Masahiro Tsujimoto, Matteo Guainazzi, Paul P. Plucinsky +7
Context. The Crab nebula has been used as a celestial calibration source of the X-ray flux and spectral shape for many years by X-ray astronomy missions. However, the object is oft…
Discovery and Monitoring of a new Black Hole Candidate XTE J1752-223 with RXTE: RMS spectrum evolution, BH mass and the source distance
Nikolai Shaposhnikov, Craig Markwardt, Jean Swank +1
We report on the discovery and monitoring observations of a new galactic black hole candidate XTE J1752-223 by Rossi X-ray Timing Explorer (RXTE). The new source appeared on the X-…
New Evidence for a Black Hole in the Compact Binary Cygnus X-3
Chris Shrader, Lev Titarchuk, Nikolai Shaposhnikov
The bright and highly variable X-ray and radio source known as Cygnus X-3 was among the first X-ray sources discovered, yet it remains in many ways an enigma. Its known to consist…
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…