Reference : Multi-wavelength observations of afterglow of GRB 080319B and the modeling constraints
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/34476
Multi-wavelength observations of afterglow of GRB 080319B and the modeling constraints
English
Pandey, S. B. [> > > >]
Castro-Tirado, A. J. [> > > >]
Jelínek, M. [> > > >]
Kamble, Atish P [> > > >]
Gorosabel, J. [> > > >]
de Ugarte Postigo, A. [> > > >]
Prins, S. [> > > >]
Oreiro, R. [> > > >]
Chantry, Virginie [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Trushkin, S. [> > > >]
Bremer, M. [> > > >]
Winters, J. M. [> > > >]
Pozanenko, A. [> > > >]
Krugly, Yu [> > > >]
Slyusarev, I. [> > > >]
Kornienko, G. [> > > >]
Erofeeva, A. [> > > >]
Misra, K. [> > > >]
Ramprakash, A. N. [> > > >]
Mohan, V. [> > > >]
Bhattacharya, D. [> > > >]
Volnova, A. [> > > >]
Plas, Jean-Luc [Centre Hospitalier Universitaire de Liège - CHU > > DIALYSE (SN +6) >]
Ibrahimov, M. [> > > >]
Impedovo, Martine [Centre Hospitalier Universitaire de Liège - CHU > > HOSPITALISATION - GERIATRIE 1 NDB >]
Volvach, A. [> > > >]
Wijers, R A M J [> > > >]
1-Sep-2009
Astronomy and Astrophysics
EDP Sciences
504
1
45-51
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] Astrophysics - High Energy Astrophysical Phenomena ; Astrophysics - Cosmology and Extragalactic Astrophysics
[en] We present observations of the afterglow of GRB 080319B at optical, mm and radio frequencies from a few hours to 67 days after the burst. Present observations along with other published multi-wavelength data have been used to study the light-curves and spectral energy distributions of the burst afterglow. The nature of this brightest cosmic explosion has been explored based on the observed properties and it's comparison with the afterglow models. Our results show that the observed features of the afterglow fits equally good with the Inter Stellar Matter and the Stellar Wind density profiles of the circum-burst medium. In case of both density profiles, location of the maximum synchrotron frequency $\nu_m$ is below optical and the value of cooling break frequency $\nu_c$ is below $X-$rays, $\sim 10^{4}$s after the burst. Also, the derived value of the Lorentz factor at the time of naked eye brightness is $\sim 300$ with the corresponding blast wave size of $\sim 10^{18}$ cm. The numerical fit to the multi-wavelength afterglow data constraints the values of physical parameters and the emission mechanism of the burst.
http://hdl.handle.net/2268/34476
10.1051/0004-6361/200811135
The authors thank EDP Sciences for their deposit authorization

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