Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/150593
Title: | Detection of very high energy radiation from the BL lacertae object PG 1553+113 with the MAGIC telescope |
Author: | MAGIC Collaboration Paredes i Poy, Josep Maria Ribó Gomis, Marc Bosch i Ramon, Valentí |
Keywords: | Raigs gamma Observatoris astronòmics Gamma rays Astronomical observatories |
Issue Date: | 2007 |
Publisher: | Institute of Physics (IOP) |
Abstract: | In 2005 and 2006, the MAGIC telescope observed very high energy gamma-ray emission from the distant BL Lac object PG 1553+113. The overall significance of the signal was 8.8 σ for 18.8 hr of observation time. The light curve shows no significant flux variations on a daily timescale; the flux level during 2005 was, however, significantly higher compared to 2006. The differential energy spectrum between ~90 and 500 GeV is well described by a power law with photon index Γ = 4.2 ± 0.3. The combined 2005 and 2006 energy spectrum provides an upper limit of z = 0.74 on the redshift of the object. |
Note: | Reproducció del document publicat a: https://doi.org/10.1086/511384 |
It is part of: | Astrophysical Journal, 2007, vol. 654, p. 119-122 |
URI: | http://hdl.handle.net/2445/150593 |
Related resource: | https://doi.org/10.1086/511384 |
ISSN: | 0004-637X |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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546725.pdf | 97.3 kB | Adobe PDF | View/Open |
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