Optical Observations and Multiband Modelling of the Afterglow of GRB 041006: Evidence of A Hard Electron Energy Spectrum

(2) Raman Research Institute; 3); (3) Dept. of Physics; Bangalore; Bangalore); D. Bhattacharya (2); Indian Institute of Science; Kuntal Misra (1); L. Resmi (2; Naini Tal

arxiv: astro-ph/0511352 · v1 · submitted 2005-11-11 · 🌌 astro-ph

Optical Observations and Multiband Modelling of the Afterglow of GRB 041006: Evidence of A Hard Electron Energy Spectrum

Kuntal Misra (1) , L. Resmi (2 , 3) , S. B. Pandey (1) , D. Bhattacharya (2) , R. Sagar (1) ((1) Aryabhatta Research Institute of Observational Sciences (ARIES) , Naini Tal , (2) Raman Research Institute

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Bangalore (3) Dept. of Physics Indian Institute of Science Bangalore)

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keywords afterglowenergyelectronhardmultibandobservationsspectrumangle

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We present the CCD Cousins R band photometric observations of the afterglow of GRB 041006. The multiband afterglow evolution is modelled using an underlying `hard' electron energy spectrum with a $p_1 \sim 1.3$. The burst appears to be of very low energy ($E \sim 10^{48}$ ergs) confined to a narrow cone of opening angle $\theta \sim 2.3^{\circ}$. The associated supernova is compared with SN1998bw and is found to be brighter.

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Optical Observations and Multiband Modelling of the Afterglow of GRB 041006: Evidence of A Hard Electron Energy Spectrum

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