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http://hdl.handle.net/2445/122844
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DC Field | Value | Language |
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dc.contributor.author | Cañellas, A. | - |
dc.contributor.author | Marcote Martin, Benito | - |
dc.contributor.author | Munar i Adrover, Pere | - |
dc.contributor.author | Moldón Vara, Francisco Javier | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Ribó Gomis, Marc | - |
dc.contributor.author | Zabalza de Torres, Víctor | - |
dc.date.accessioned | 2018-06-07T14:51:31Z | - |
dc.date.available | 2018-06-07T14:51:31Z | - |
dc.date.issued | 2011-11-20 | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.uri | http://hdl.handle.net/2445/122844 | - |
dc.description.abstract | We report on the observation of $\gamma$-rays above 25\,GeV from the Crab pulsar (PSR B0532+21) using the MAGIC I telescope. Two data sets from observations during the winter period 2007/2008 and 2008/2009 are used. In order to discuss the spectral shape from 100\,MeV to 100\,GeV, one year of public {\it Fermi} Large Area Telescope ({\it Fermi}-LAT) data are also analyzed to complement the MAGIC data. The extrapolation of the exponential cutoff spectrum determined with the Fermi-LAT data is inconsistent with MAGIC measurements, which requires a modification of the standard pulsar emission models. In the energy region between 25 and 100\,GeV, the emission in the P1 phase (from -0.06 to 0.04, location of the main pulse) and the P2 phase (from 0.32 to 0.43, location of the interpulse) can be described by power laws with spectral indices of $-3.1 \pm 1.0_{stat} \pm 0.3_{syst}$ and $-3.5 \pm 0.5_{stat} \pm 0.3_{syst}$, respectively. Assuming an asymmetric Lorentzian for the pulse shape, the peak positions of the main pulse and the interpulse are estimated to be at phases $-0.009 \pm 0.007$ and $0.393 \pm 0.009$, while the full widths at half maximum are $0.025 \pm 0.008$ and $0.053 \pm 0.015$, respectively. | - |
dc.format.extent | 14 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Institute of Physics (IOP) | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1088/0004-637X/742/1/43 | - |
dc.relation.ispartof | Astrophysical Journal, 2011, vol. 742, num. 43 | - |
dc.relation.uri | https://doi.org/10.1088/0004-637X/742/1/43 | - |
dc.rights | (c) American Astronomical Society, 2011 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Estels | - |
dc.subject.classification | Raigs gamma | - |
dc.subject.other | Stars | - |
dc.subject.other | Gamma rays | - |
dc.title | Observations of the Crab Pulsar between 25 and 100 GeV with the MAGIC I Telescope | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 602762 | - |
dc.date.updated | 2018-06-07T14:51:31Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
Files in This Item:
File | Description | Size | Format | |
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602762.pdf | 1.33 MB | Adobe PDF | View/Open |
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