Energy‐dependent timing studies of the low‐hard state of black hole X‐ray binaries with XMM‐Newton

2019 ◽  
Vol 340 (4) ◽  
pp. 314-318 ◽  
Author(s):  
Holger Stiele ◽  
Albert K. H. Kong
Keyword(s):  
Black Hole ◽  
X Ray ◽  
Hard State ◽  
Energy Dependent ◽  
X Ray Binaries

scholarly journals Hard state neutron star and black hole X-ray binaries in the radio:X-ray luminosity plane

2018 ◽  
Vol 478 (1) ◽  
pp. L132-L136 ◽  
Author(s):  
Elena Gallo ◽  
Nathalie Degenaar ◽  
Jakob van den Eijnden
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
X Ray ◽  
Hard State ◽  
X Ray Binaries

scholarly journals Accretion-outflow connection in the outliers of the “universal” radio/X-ray correlation

2010 ◽  
Vol 6 (S275) ◽  
pp. 255-259
Author(s):  
M. Coriat ◽  
S. Corbel ◽  
L. Prat ◽  
J. C. A. Miller-Jones ◽  
D. Cseh ◽  
...  
Keyword(s):  
Black Hole ◽  
Compact Objects ◽  
X Rays ◽  
X Ray ◽  
Black Hole Candidate ◽  
Long Term Study ◽  
Hard State ◽  
Universal Correlation ◽  
X Ray Binaries

AbstractIn recent years, numerous efforts have been devoted to unravel the connection between accretion flow and jets in accreting compact objects. Here we report new constraints on these issues, through the long term study of the radio and X-ray behaviour of the black hole candidate H 1743–322. This source is known to be one of the “outliers” of the universal radio/X-ray correlation, i.e. a group of stellar mass accreting black holes displaying fainter radio emission for a given X-ray luminosity, than expected from the correlation. In this work we find, at high X-ray luminosity in the hard state, a tight radio/X-ray correlation with an unusual steep slope of b = 1.38 ± 0.03. This correlation then breaks below ~5 × 10−3LEdd (M/10M⊙)−1 in X-rays and becomes shallower. When compared with radio/X-ray data from other black hole X-ray binaries, we see that the deviant points of H 1743–322 join the universal correlation and seem to follow it at low luminosity. Based on these results, we investigate several hypotheses that could explain both the b ~ 1.4 slope and the transition toward the universal correlation.

scholarly journals A DEEP RADIO SURVEY OF HARD STATE AND QUIESCENT BLACK HOLE X-RAY BINARIES

2011 ◽  
Vol 739 (1) ◽  
pp. L18 ◽  
Author(s):  
J. C. A. Miller-Jones ◽  
P. G. Jonker ◽  
T. J. Maccarone ◽  
G. Nelemans ◽  
D. E. Calvelo
Keyword(s):  
Black Hole ◽  
X Ray ◽  
Hard State ◽  
X Ray Binaries ◽  
Radio Survey

scholarly journals CONSTRAINTS ON X-RAY POLARIZATION OF SYNCHROTRON JETS FROM STELLAR-MASS BLACK HOLES

2012 ◽  
Vol 08 ◽  
pp. 102-107
Author(s):  
D. M. RUSSELL
Keyword(s):  
Magnetic Field ◽  
Black Holes ◽  
Black Hole ◽  
Synchrotron Emission ◽  
Relativistic Jets ◽  
X Ray ◽  
Linearly Polarized ◽  
Hard State ◽  
X Ray Binaries ◽  
The Magnetic Field

For most black hole X-ray binaries, the fraction of X-ray flux originating in the synchrotron jets is generally thought to be low in the hard state. However in one intriguing case, the infrared – X-ray correlations, evolution of broadband spectra and timing signatures suggest that synchrotron emission from a jet likely dominated both the infrared and X-ray flux on the hard state decline of an outburst of XTE J1550–564 at a luminosity of ~ (2 × 10-4 – 2 × 10-3) L Edd . Synchrotron emission from the relativistic jets launched close to black holes can be highly linearly polarized, depending on the configuration of the magnetic field. It has recently been shown that the polarimetric signature of their jets is detected in the infrared and is highly variable. This reveals the magnetic geometry in a region of the compact jet near its base, close to the black hole. From these results, it is predicted that in some cases, high (possibly up to 10%), variable levels of X-ray polarization from synchrotron emission originating in jets will be detected from accreting black holes by future spaceborne X-ray polarimeters.

scholarly journals GRS 1758–258: RXTE Monitoring of a Rare Persistent Hard State Black Hole

10.14311/1480 ◽  
2011 ◽  
Vol 51 (6) ◽  
Author(s):  
M. Obst ◽  
K. Pottschmidt ◽  
A. Lohfink ◽  
J. Wilms ◽  
M. Böck ◽  
...  
Keyword(s):  
Black Hole ◽  
State Transitions ◽  
Spectral Evolution ◽  
X Ray ◽  
Soft State ◽  
Hard State ◽  
Long Term Behavior ◽  
X Ray Binaries ◽  
Black Hole Candidates

GRS 1758–258 is the least studied of the three persistent black hole X-ray binaries in our Galaxy. It is also one of only two known black hole candidates, including all black hole transients, which shows a decrease of its 3-10 keV flux when entering the thermally dominated soft state, rather than an increase.We present the spectral evolution of GRS 1758–258 from RXTE-PCA observations spanning a time of about 11 years from 1996 to 2007. During this time, seven dim soft states are detected. We also consider INTEGRAL monitoring observations of the source and compare the long-term behavior to that of the bright persistent black hole X-ray binary Cygnus X-1. We discuss the observed state transitions in the light of physical scenarios for black hole transitions.

scholarly journals Coronal Properties of Black Hole X-Ray Binaries in the Hard State as Seen by NuSTAR and Swift

2020 ◽  
Vol 889 (1) ◽  
pp. L18 ◽  
Author(s):  
Zhen Yan ◽  
Fu-Guo Xie ◽  
Wenda Zhang
Keyword(s):  
Black Hole ◽  
X Ray ◽  
Hard State ◽  
X Ray Binaries

scholarly journals Accretion disc–jet couplings in X-ray binaries

2020 ◽  
Vol 495 (2) ◽  
pp. 2408-2415
Author(s):  
Pei-Xin Shen ◽  
Wei-Min Gu
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Flow Model ◽  
Accretion Disc ◽  
X Ray ◽  
Accretion Flow ◽  
Disc Model ◽  
Hard State ◽  
X Ray Binaries ◽  
Jet Power

ABSTRACT When the matter from a companion star is accreted towards the central compact accretor, i.e. a black hole (BH) or a neutron star (NS), an accretion disc and a jet outflow will form, providing bight X-ray and radio emission, which is known as X-ray binaries (XRBs). In the low/hard state, there exist disc–jet couplings in XRBs, but it remains uncertain whether the jet power comes from the disc or the central accretor. Moreover, black hole X-ray binaries (BHXRBs) have different properties compared with neutron star X-ray binaries (NSXRBs): quiescent BHXRBs are typically two to three orders of magnitude less luminous than NSXRBs in X-ray, whereas BHXRBs are more radio loud than NSXRBs. In observations, an empirical correlation has been established between radio and X-ray luminosity, $L_{\rm R} \propto L_{\rm X}^b$, where b ∼ 0.7 for BHXRBs and b ∼ 1.4 for non-pulsating NSXRBs. However, there are some outliers of BHXRBs showing unusually steep correlation as NSXRBs at higher luminosities. In this work, under the assumption that the origin of jet power is related to the internal energy of the inner disc, we apply our magnetized, radiatively efficient thin disc model and the well-known radiatively inefficient accretion flow model to NSXRBs and BHXRBs. We find that the observed radio/X-ray correlations in XRBs can be well understood by the disc–jet couplings.

scholarly journals Fitting along the Fundamental Plane: New comparisons of jet physics across the black hole mass scale

2010 ◽  
Vol 6 (S275) ◽  
pp. 250-254 ◽  
Author(s):  
Sera Markoff ◽  
Michael A. Nowak ◽  
Dipankar Maitra ◽  
Jörn Wilms ◽  
Elena Gallo ◽  
...  
Keyword(s):  
Black Hole ◽  
Mass Range ◽  
Mass Scale ◽  
Jet Physics ◽  
Black Hole Mass ◽  
Fundamental Plane ◽  
X Ray ◽  
Black Hole Accretion ◽  
Hard State ◽  
X Ray Binaries

AbstractCorrelations between the radio and X-ray bands in the hard state of black hole X-ray binaries (BHBs) have led to the discovery of the Fundamental Plane of black hole accretion, linking accretion-driven radiative attributes to black hole mass. Although this discovery has led to new constraints on radiative efficiencies, there is still significant degeneracy in terms of understanding the governing physics. I present several new results exploring the processes driving the Fundamental Plane over the black hole mass range. These include the first ever homogeneous fits of sources at approximately the same Eddington luminosity but millions of times different in mass, which I focus on for this proceeding article.

scholarly journals TRACING THE REVERBERATION LAG IN THE HARD STATE OF BLACK HOLE X-RAY BINARIES

2015 ◽  
Vol 814 (1) ◽  
pp. 50 ◽  
Author(s):  
B. De Marco ◽  
G. Ponti ◽  
T. Muñoz-Darias ◽  
K. Nandra
Keyword(s):  
Black Hole ◽  
X Ray ◽  
Hard State ◽  
X Ray Binaries
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