Moesta, Philipp and Alic, Daniela and Rezzolla, Luciano and Zanotti, Olindo and Palenzuela, Carlos (2012) On the Detectability of Dual Jets from Binary Black Holes. Astrophysical Journal Letters, 749 (2). Art. No. L32. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20120507-142523746
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We revisit the suggestion that dual jets can be produced during the inspiral and merger of supermassive black holes when these are immersed in a force-free plasma threaded by a uniform magnetic field. By performing independent calculations of the late inspiral and merger, and by computing the electromagnetic (EM) emission in a way which is consistent with estimates using the Poynting flux, we show that a dual-jet structure is present but energetically subdominant with respect to a non-collimated and predominantly quadrupolar emission, which is similar to the one computed when the binary is in electrovacuum. While our findings set serious restrictions on the detectability of dual jets from coalescing binaries, they also increase the chances of detecting an EM counterpart from these systems.
|Additional Information:||© 2012 The American Astronomical Society. Received 2012 February 23; accepted 2012 March 7; published 2012 March 30. We are grateful to J.-L. Jaramillo for discussions and to L. Lehner for suggesting an approach similar to Equation (4). We also thank A. Sesana, B. Ahmedov, and V. Morozova. This work was supported in part by the DFG grant SFB/Transregio 7; the computations were made at the AEI and on TERAGRID (TG-MCA02N014).|
|Subject Keywords:||binaries: close – galaxies: jets – gravitation – magnetic fields – plasmas – relativistic processes|
|Official Citation:||On the Detectability of Dual Jets from Binary Black Holes Philipp Moesta et al. 2012 ApJ 749 L32|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||08 May 2012 17:24|
|Last Modified:||26 Dec 2012 15:10|
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