Bibcode
Garczarczyk, Markus; Antonelli, L. Angelo; La Barbera, Antonio; Bastieri, Denis; Convino, Stefano; Galante, Nicola; Gaug, Markus; Longo, Francesco; Scapin, Valeria
Referencia bibliográfica
2008 NANJING GAMMA-RAY BURST CONFERENCE. AIP Conference Proceedings, Volume 1065, pp. 342-344 (2008).
Fecha de publicación:
10
2008
Número de citas
5
Número de citas referidas
4
Descripción
The detection of the Very High Energy (VHE) emission from Gamma Ray
Bursts (GRBs) is desired, as it will provide an unprecedented
opportunity to enlighten the nature of the central engine and the
interaction between the relativistic flow and the environment of the
burst progenitor. Thanks to its large reflector size, high quantum
efficiency photomultipliers and sophisticated trigger logic, the MAGIC
telescope is currently the most sensitive detector at energies around
100 GeV. In addition, thanks to its fast repositioning time, MAGIC is
able to start the GRB follow-up observation, triggered by an alert from
the GRB Coordinates Network (GCN), on average within 45s after the burst
onset T0. In the past years of operation several simultaneous
GRB observations of the prompt and early afterglow emission phase with
satellite experiments were performed by MAGIC. However, until now
without successful detection of VHE γ-rays above threshold
energies >80 GeV. The computed upper limits are compatible with a
power law extrapolation, where intrinsic fluxes are evaluated by taking
into account the attenuation due to the scattering in the metagalactic
radiation field.