Volume 535, November 2011
|Number of page(s)||5|
|Published online||18 November 2011|
Letter to the Editor
Electromagnetic priors for black hole spindown in searches for gravitational waves from supernovae and long GRBs⋆
Korea Institute for Advanced Study, 85 Hoegiro, Dongdaemun-gu, 130-722 Seoul, Korea
2 Istituto Nazionale di AstrofisicaOsservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy
3 International Center for Relativistic Astrophysics, Piazzale della Repubblica 2, 65122 Pescara, Italy
4 School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel
Received: 13 September 2011
Accepted: 26 October 2011
Context. Some core-collapse supernovae appear to be hyper-energetic, and a subset of these are aspherical and associated with long GRBs.
Aims. We use observations of electromagnetic emission from core-collapse supernovae and GRBs to impose constraints on their free energy source as a prior to searches for their gravitational wave emission.
Methods. We review these events based on a finite efficiency for the conversion of spin energy to magnetic winds powering supernovae.
Results. We find that some of the hyper-energetic events cannot be powered by the spindown of rapidly rotating proto-neutron stars by virtue of their limited rotational energy. They can, instead, be produced by the spindown of black holes providing a distinct prospect for gravitational-wave emission of interest to LIGO, Virgo, and the LCGT.
Key words: black hole physics / radiation mechanisms: non-thermal / gravitational waves
Figure 1 is available in electronic form at http://www.aanda.org
© ESO, 2011
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