Spectral Energy Distributions of Southern Binary X-Ray Sources
The Astrophysical Journal Supplement Series, 2023 The rapid variability of X-ray binaries (XRBs) produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in their ...
John M. Dickey +7 more
doaj +1 more source
The infrared/X-ray correlation of GX 339−4: probing hard X-ray emission in accreting black holes [PDF]
, 2009 GX 339-4 has been one of the key sources for unravelling the accretion ejection coupling in accreting stellar mass black holes. After a long period of quiescence between 1999 and 2002, GX 339-4 underwent a series of four outbursts that have been ...
M. Coriat +6 more
semanticscholar +1 more source
Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei
The Astrophysical Journal, 2023 The origin of stellar-mass black hole mergers discovered through gravitational waves is being widely debated. Mergers in the disks of active galactic nuclei (AGNs) represent a promising source of origin, with possible observational clues in the ...
Hiromichi Tagawa +4 more
doaj +1 more source
Athena: the X-ray observatory to study the hot and energetic Universe
, 2015 Hot gas pervades the Universe: about half of the baryonic content in the Universe is expected to be at T > 105 K, and there are as many baryons at T > 107 trapped in galaxy clusters as there are locked into stars.
X. Barcons +6 more
semanticscholar +1 more source
DISTINGUISHING BETWEEN SPOT AND TORUS MODELS OF HIGH-FREQUENCY QUASIPERIODIC OSCILLATIONS
Acta Polytechnica, 2014 In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic trajectories close to the innermost stable circular orbit in the ...
Vladimír Karas +10 more
doaj +1 more source
Direct Detection of Warm Dark Matter in the X-Ray [PDF]
, 2001 We point out a serendipitous link between warm dark matter (WDM) models for structure formation on the one hand and the high-sensitivity energy range (1-10 keV) for X-ray photon detection on the Chandra and XMM-Newton observatories on the other.
K. Abazajian, G. Fuller, W. Tucker
semanticscholar +1 more source
Multi-instrument Search for Gamma-Ray Counterpart of X-Ray Transients Detected by EP/WXT
The Astrophysical Journal LettersAs a soft X-ray imager with an unprecedentedly large field of view, Einstein Probe (EP)/Wide-field X-ray Telescope (WXT) has detected many (fast) X-ray transients, whose nature is very intriguing.
Yan-Qiu Zhang +27 more
doaj +1 more source
Turbulence in clusters of galaxies and X-ray line profiles [PDF]
, 2003 Large-scale bulk motions and hydrodynamic turbulence in the intergalactic gas that fills clusters of galaxies significantly broaden X-ray emission lines.
N. Inogamov, R. Sunyaev
semanticscholar +1 more source
SAUNAS. I. Searching for Low Surface Brightness X-Ray Emission with Chandra/ACIS
The Astrophysical JournalWe present Selective Amplification of Ultra Noisy Astronomical Signal ( SAUNAS ), a pipeline designed for detecting diffuse X-ray emission in the data obtained with the Advanced CCD Imaging Spectrometer (ACIS) of the Chandra X-ray Observatory.
Alejandro S. Borlaff +10 more
doaj +1 more source
Discovery of a New Flaring Class in GRS 1915+105 Using AstroSat
The Astrophysical JournalThe highly variable black hole X-ray binary GRS 1915+105 has shown many flaring classes when the source oscillates between the high soft state (HS) and the hard intermediate state with a transition time of less than 10 s. The X-ray flux is anticorrelated
Ruchika Dhaka +3 more
doaj +1 more source