By Thomas J. Maccarone, Robert P. Fender, Luis C. Ho

ISBN-10: 1402040849

ISBN-13: 9781402040849

This quantity brings jointly contributions from a few of the world's major gurus on black gap accretion. The papers inside symbolize a part of a brand new move to use the relative merits of learning stellar mass and supermassive black holes and to assemble the data received from the 2 techniques. the subjects mentioned right here run the gamut of the state-of-the-art in black gap observational and theoretical work-variability, spectroscopy, disk-jet connections, and multi-wavelength campaigns on black holes are all covered.

Reprinted from ASTROPHYSICS AND area technological know-how, 300:1-3 (2005)

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Extra info for From X-ray Binaries to Quasars: Black Holes on All Mass Scales

Example text

If the system is left alone the water level rises until the pressure causes Pi = Pj + Px . Now consider what happens when the tap is opened more, causing Pj to rise. The water level and pressure (proportional to E) drop causing Px to reduce. If the tap is then partly closed, the water level rises, Pj decreases and Px increases. The rate Px depends upon the past history, or integral of Pj . Identifying the optical flux as a marker of Pj and the X-ray flux as a marker of Px we obtain the basic behaviour seen in XTE J1118+480.

1, corresponding to a jet efficiency j 3 × 10−3 . There are additional independent arguments in favour of jet dominance in low/hard state sources and in XTE J1118+480 in particular. , 2003), as well as on standard synchrotron formulae (Heinz and Sunyaev, 2003), Fender et al. (2003, hereafter FGP03) have shown that, provided that advection into the black-hole horizon and/or convective motions do not store a large fraction of the accretion power, there should exist a critical accretion rate, m˙ cr , below which an accreting black hole is jet-dominated.

A strong requirement of the model is that the total jet power should be at least a few times larger than the observed X-ray luminosity, implying a radiative efficiency for the jet j 3 × 10−3 . This would be consistent with the overall low radiative efficiency of the source. We present independent arguments showing that the jet probably dominates the energetic output of all accreting black holes in the low-hard state. Keywords: accretion, black-hole physics, star: XTE J1118+480, X-rays: binaries 1.

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From X-ray Binaries to Quasars: Black Holes on All Mass Scales by Thomas J. Maccarone, Robert P. Fender, Luis C. Ho


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