Changeset 6161
- Timestamp:
- 01/31/05 20:15:56 (20 years ago)
- Location:
- trunk/MagicSoft/GRB-Proposal
- Files:
-
- 2 edited
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trunk/MagicSoft/GRB-Proposal/GRB_proposal_2005.tex
r6160 r6161 166 166 167 167 \bibitem{KNEISKE} Kneiske T.M., Bretz T., Mannheim K., Hartmann D.H., A\&A 413, 807, 2004. 168 \bibitem{GRB030329} Spectra of the burst: http://space.mit.edu/HETE/Bursts/GRB030329/ 168 169 169 170 %Not used references -
trunk/MagicSoft/GRB-Proposal/Strategies.tex
r6160 r6161 70 70 We determine the maximum zenith angle for GRB observations by requiring that the overwhelming majority of possible GRBs will have an in principle observable spectrum. Figure~\ref{fig:grh} 71 71 shows the gamma-ray horizon (GRH) as computed in~\cite{KNEISKE}. The GRH is defined as the 72 gamma-ray energy at which a part of $1/e$ of a hypoth iszed mono-energetic flux gets absorbed after72 gamma-ray energy at which a part of $1/e$ of a hypothesied mono-energetic flux gets absorbed after 73 73 travelling a distance of $d$, expressed in redshift $z$ from the earth. One can see that at typical 74 GRB distances of $z=1$, all gamma-rays above 100\,GeV get absorbed before they reach the earth. 74 GRB distances of $z=1$, all gamma-rays above 100\,GeV get absorbed before they reach the earth. 75 75 76 \par 76 Even the closest GRB with known redshift ever observed, GRB030329~\cite{GRB030329}, lies at a redshift 77 78 Even the closest GRB with known redshift ever observed, GRB030329~\cite{GRB030329}, lies at a redshift 77 79 of $z=0.1685$. In this case, gamma-rays above 200\,GeV get entirely absorbed. 78 80
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