Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/151160
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | MAGIC Collaboration | - |
dc.contributor.author | Munar i Adrover, Pere | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Ribó Gomis, Marc | - |
dc.contributor.author | Moldón Vara, Francisco Javier | - |
dc.date.accessioned | 2020-02-25T14:52:32Z | - |
dc.date.available | 2020-02-25T14:52:32Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/2445/151160 | - |
dc.description.abstract | Context. We present the results of a long M 87 monitoring campaign in very high energy γ-rays with the MAGIC-I Cherenkov telescope. Aims. We aim to model the persistent non-thermal jet emission by monitoring and characterizing the very high energy γ-ray emission of M 87 during a low state. Methods. A total of 150 h of data were taken between 2005 and 2007 with the single MAGIC-I telescope, out of which 128.6 h survived the data quality selection. We also collected data in the X-ray and Fermi-LAT bands from the literature (partially contemporaneous). Results. No flaring activity was found during the campaign. The source was found to be in a persistent low-emission state, which was at a confidence level of 7σ. We present the spectrum between 100 GeV and 2 TeV, which is consistent with a simple power law with a photon index Γ = 2.21 ± 0.21 and a flux normalization at 300 GeV of (7.7 ± 1.3) × 10-8 TeV-1 s-1 m-2. The extrapolation of the MAGIC spectrum into the GeV energy range matches the previously published Fermi-LAT spectrum well, covering a combined energy range of four orders of magnitude with the same spectral index. We model the broad band energy spectrum with a spine layer model, which can satisfactorily describe our data. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | EDP Sciences | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1051/0004-6361/201117827 | - |
dc.relation.ispartof | Astronomy & Astrophysics, 2012, vol. 544, num. A96 | - |
dc.relation.uri | https://doi.org/10.1051/0004-6361/201117827 | - |
dc.rights | (c) The European Southern Observatory (ESO), 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Astronomia de raigs gamma | - |
dc.subject.classification | Observacions astronòmiques | - |
dc.subject.other | Gamma ray astronomy | - |
dc.subject.other | Astronomical observations | - |
dc.title | MAGIC observations of the giant radio galaxy M 87 in a low-emission state between 2005 and 2007 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 617035 | - |
dc.date.updated | 2020-02-25T14:52:32Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
617035.pdf | 169.82 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.