Phase-resolved Crab pulsar measurements from 25 to 400 GeV with the MAGIC telescopes

被引：0
|
作者：
Klepser, S. [1 ]
Giavitto, G. [1 ]
Lopez, M. [2 ]
Saito, T. Y. [3 ]
Schweizer, T. [3 ]
Snidaric, I. [4 ]
Zanin, R. [1 ]
机构：
[1] IFAE, Edifici Cn,Campus UAB, E-08193 Bellaterra, Spain
[2] Univ Complutense, E-28040 Madrid, Spain
[3] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[4] Univ Rijeka Split, Croatian MAGIC Consortium, R Boskov Inst, HR-10000 Zagreb, Croatia
来源：
12TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP 2011), PTS 1-6 | 2012年 / 375卷
基金：
芬兰科学院;
关键词：
D O I：
10.1088/1742-6596/375/1/052022
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report on observations of the Crab pulsar with the MAGIC telescopes. Our data were taken in both monoscopic (> 25 GeV) and stereoscopic (> 50 GeV) observation modes. Two peaks were detected with both modes and phase-resolved energy spectra were calculated. By comparing with Fermi-LAT measurements, we find that the energy spectrum of the Crab pulsar does not follow a power law with an exponential cutoff, but has an additional hard component, extending up to at least 400 GeV. This suggests that the emission above 25 GeV is not dominated by curvature radiation, as suggested in the standard scenarios of the OG and SG models.
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页数：4
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