Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Reis, Rubens C."'
Observations over the past 20 years have revealed a strong relationship between the properties of the supermassive black hole (SMBH) lying at the center of a galaxy and the host galaxy itself. The magnitude of the spin of the black hole will play a k
Externí odkaz:
http://arxiv.org/abs/1408.1934
The quiescent state is the dominant accretion mode for black holes on all mass scales. Our knowledge of the X-ray spectrum is limited due to the characteristic low luminosity in this state. Herein, we present an analysis of the sample of dynamically-
Externí odkaz:
http://arxiv.org/abs/1405.0474
The co-evolution of a supermassive black hole with its host galaxy through cosmic time is encoded in its spin. At $z>2$, supermassive black holes are thought to grow mostly by merger-driven accretion leading to high spin. However, it is unknown wheth
Externí odkaz:
http://arxiv.org/abs/1403.4973
We re-examine archival Ginga data for the black hole binary system GS 1124-683, obtained when the system was undergoing its 1991 outburst. Our analysis estimates the dimensionless spin parameter a=cJ/GM^2 by fitting the X-ray continuum spectra obtain
Externí odkaz:
http://arxiv.org/abs/1401.1794
Constraining the accretion flow geometry of black hole binaries in outburst is complicated by the inability of simplified multi-colour disc models to distinguish between changes in the inner disc radius and alterations to the emergent spectrum, param
Externí odkaz:
http://arxiv.org/abs/1303.2116
Autor:
Steiner, James F., Reis, Rubens C., Fabian, Andrew C., Remillard, Ronald A., McClintock, Jeffrey E., Gou, Lijun, Cooke, Ryan, Brenneman, Laura W., Sanders, Jeremy S.
We present results from a deep Suzaku observation of the black hole in LMC X-1, supplemented by coincident monitoring with RXTE. We identify broad relativistic reflection features in a soft disc-dominated spectrum. A strong and variable power-law com
Externí odkaz:
http://arxiv.org/abs/1209.3269
Relativistic X-ray disk-lines have been found in multiple neutron star low-mass X-ray binaries, in close analogy with black holes across the mass-scale. These lines have tremendous diagnostic power and have been used to constrain stellar radii and ma
Externí odkaz:
http://arxiv.org/abs/1206.3956
We report on a Suzaku observation of the newly discovered X-ray binary MAXI J1836-194. The source is found to be in the hard/intermediate spectral state and displays a clear and strong relativistically broadened iron emission line. We fit the spectra
Externí odkaz:
http://arxiv.org/abs/1111.6665
Autor:
Steiner, James F., Reis, Rubens C., McClintock, Jeffrey E., Narayan, Ramesh, Remillard, Ronald A., Orosz, Jerome A., Gou, Lijun, Fabian, Andrew C., Torres, Manuel A. P.
Publikováno v:
Mon.Not.Roy.Astron.Soc.:,2011
We measure the spin of XTE J1550-564 in two ways: by modelling the thermal continuum spectrum of the accretion disc, and independently by modeling the broad red wing of the reflection fluorescence Fe-K line. We find that the spin measurements conduct
Externí odkaz:
http://arxiv.org/abs/1010.1013
In the microquasar V4641 Sgr the spin of the black hole is thought to be misaligned with the binary orbital axis. The accretion disc aligns with the black hole spin by the Lense-Thirring effect near to the black hole and further out becomes aligned w
Externí odkaz:
http://arxiv.org/abs/0808.2139