THE CANNONBALL MODEL AND SHORT HARD BURSTS Arnon Dar 44 th Rencontre De Moriond, La Thuile, Italy, February 1-8, 2009 Based on work done in collaboration with Shlomo Dado and Alvaro De Rujula 0807.1962 ( ApJ 2009 ) arXiv DD , Part of a unified theory of high energy astrophysical phenomena ( GRBs, XRFs, SHBs, Blazers, Microquasars, Cosmic Rays , Mass Extinctions( based on the cannonball )CB( model of high energy jets and their interactions Dar & De Rujula, Phsics reports 2004 Dar & De Rujula, Phsics reports 2004 Dado & Dar, ApJ 2009 Dar, Laor & Shaviv, Phys. Rev. Lett. 1998 ; Dar, Global Catastrophic Risks )Oxford Univ. Press 2008( Dado & Dar, in preparation
THE CANNONBALL MODEL AND SHORT HARD BURSTS. Arnon Dar. 44 th Rencontre De Moriond, La Thuile, Italy, February 1-8, 2009. Based on work done in collaboration with Shlomo Dado and Alvaro De Rujula. 0807.1962 (ApJ 2009) arXiv DD ,. - PowerPoint PPT Presentation
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THE CANNONBALL MODEL AND SHORT HARD BURSTS
Arnon Dar
44th Rencontre De Moriond, La Thuile, Italy, February 1-8, 2009
Based on work done in collaboration with Shlomo Dado and Alvaro De Rujula
0807.1962( ApJ 2009) arXiv DD ,
Part of a unified theory of high energy astrophysical phenomena (GRBs, XRFs, SHBs, Blazers, Microquasars, Cosmic Rays,
Mass Extinctions( based on the cannonball )CB( model of high energy jets and their interactions
Dar & De Rujula, Phsics reports 2004
Dar & De Rujula, Phsics reports 2004
Dado & Dar, ApJ 2009
Dar, Laor & Shaviv, Phys. Rev. Lett. 1998 ;Dar, Global Catastrophic Risks )Oxford Univ. Press 2008(
Dado & Dar, in preparation
Bipolar jets fired in mass accretion episodes on compact objectsBipolar jets fired in mass accretion episodes on compact objects(e.g., fall-back matter in SNe(e.g., fall-back matter in SNe, microquasars, n*-n* mergers, phase , microquasars, n*-n* mergers, phase transition in compact stars) produce transition in compact stars) produce GRBsGRBs/SHBs by ICS of light/SHBs by ICS of light
Jet of CBsJet of CBs
ICSICS of Stellar Light/Gloryof Stellar Light/GloryGRB/XRFGRB/XRF/SHB/SHBCR burst (CRB)CR burst (CRB)
Scattering of Scattering of ISMISM
The cannonball )CB( model of GRBs/XRFs/SHBs/CRBs
Magnetic
Scattered light from thewind of the progenitorstar or a companion star,
or an accretion disk
Shaviv & Dar 1995Shaviv & Dar 1995::
wind/ejecta
(Dar et al. 1992)
glory photons
Relativistic jets are highly collimated plasmoids made of ordinary matter )not conical shells made of e+e- plasma(. Their radiation is produced mainly through interaction with the environment )not `internal collisions’( .
Quasar 3C175
From high resolution radio, optical and X-ray observations:
Deceleration of relativistic CBs with moon-like mass fired by the Microquasar XTE J1550-564 in 8/1998observed with the X-ray observatory Chandra
(Corbel et al. 2003)
flare up when aflare up when a CB collides withCB collides with
a density bumpa density bump??
Bipolar jets of cannonballs of ordinary matter ejected in mass accretion episodes
Converted to Energy of Cosmic Ray Beamand Gamma Ray Burst
CBs fired by the microquasar XTE J1550-564 seen in X-raysby Chandra (Corbel et al. 2002)
HST image of the glory (dust echo) of the stellar outburst of V383 Monocerotis on early January 2002 taken on 28 October 2003 (Bond et al 2003)
winds blown bya progenitor star ,
a binary companion , or an accretion disk
SHBs are produced through ICS of light by the electrons in plasmoids fired by the central
engine. The light can be that of a companion star or a glory-
light scattered/emitted from
In the CB model:
Merger of neutron stars and of a neutron star and a black hole in compact binaries(Blinnikov et al. 1984, Paczynski 1986, Goodman, Dar and Nussinov 1987, Eichler et al. 1989)
launch highly relativistic bipolar jets )Shaviv and Dar 1995, Dar 1998, Dar and De Rujula 2000(
Collapse of compact stars )neutron stars, hyper stars, quark stars( to a more compact stardue to mass accretion, and/or loss of angular momentum and/or cooling by radiation )Dar et al.
1992 ,Shaviv and Dar 1995, Dar 1998a,1999, Dar and De Rujula 2000) launch highly relativistic bipolar jets
Phase transitions inside compact stars, such as neutron-stars, hyper-stars and quark stars )Dar 1999, Dar and De Rujula 2000, Dar 2006(
Accretion episodes in microblazars and intermediate mass black holes in dense stellar regions )Dar 1998,1999(
SHBs: Progenitors and origin
SGRs:
SHBs:
NORMAL ENVIRONMENT: Super star-cluster, Globular cluster
SHB Production: ICS of glory light by highly relativistic CBs Extended Soft Component: SR/ICS from CBs crossing the clusterAfterglow Emission: SR from CBs in the ISM outside the cluster
s 100103/~/r~ESC)(
ms 30103/10~/r~SHB)(16
00c
161500g
pcct
ct
The Dominant Emission Mechanisms
in the CB Model
ICS of Light/Glory:
Synchrotron Radiation:Prompt UVO emission
Broad-band AGs SR Flares
Pulse ShapeSpectrumSpectral evolutionPolarization
Correlations between PE ObservablesSub-GeV toTeV photons )Double-Peak (
The numerous predictions of the cannonball model which were derived in fair approximations from underlying solid physical assumptions are simple and falsifiable. So far they agree well with the mounting data accumulated from space- and ground-