The XRF080109-SN2008D and a decade of GRB-Jet-SN connection

Details The XRF080109-SN2008D and a decade of GRB-Jet-SN connection The XRF080109-SN2008D and a decade of GRB-Jet-SN connection

2009-01-28

arxiv.org/abs/0901.4524v1

SIF, Conference Proceedings, Vulcano Workshop 2008; page, 351-362

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

11 pages, 12 figures

Scientific paper

Last and nearest GRB-XRF 080109 has been an exceptional lesson on GRB nature. After a decade (since 25 April 08) we know that Supernovae may often contain a Jet. Its persistent activity may shine on axis as a GRBs. Such a persistent, thin beamed gamma jet may be powered by either a BH (Black Holes) or Pulsars. Late stages of these jets may loose the SN traces and appear as a short GRB or a long orphan GRB (depending on jet angular velocity and view angle). XRF are peripherical viewing of the jets. These precessing and spinning gamma jet are originated by Inverse Compton and-or Synchrotron Radiation at pulsars or micro-quasars sources, by ultra-relativistic electrons. These Jets are most powerful at Supernova birth, blazing, once on axis, to us and flashing GRB detector. The trembling of the thin jet explains naturally the observed erratic multi-explosive structure of different GRBs. The jets are precessing (by binary companion or inner disk asymmetry) and decaying by power on time scales of few hours, but they keep staying inside the observer cone view only a few seconds duration times (GRB); the jet is thinner in gamma and wider in X band. This explain the wider and longer X GRB afterglow duration and the rare presence of X-ray precursors.

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