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http://hdl.handle.net/2445/151125
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DC Field | Value | Language |
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dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Munar i Adrover, Pere | - |
dc.contributor.author | Ribó Gomis, Marc | - |
dc.contributor.author | Bosch i Ramon, Valentí | - |
dc.contributor.author | Moldón Vara, Francisco Javier | - |
dc.date.accessioned | 2020-02-25T10:45:10Z | - |
dc.date.available | 2020-02-25T10:45:10Z | - |
dc.date.issued | 2012-07-05 | - |
dc.identifier.issn | 2041-8205 | - |
dc.identifier.uri | http://hdl.handle.net/2445/151125 | - |
dc.description.abstract | The very high energy (VHE) \gamma-ray source HESS J0632+057 has recently been confirmed to be a \gamma-ray binary. The optical counterpart is the Be star MWC 148, and a compact object of unknown nature orbits it every ~321 d with a high eccentricity of ~0.8. We monitored HESS J0632+057 with the stereoscopic MAGIC telescopes from 2010 October to 2011 March and detected significant VHE \gamma-ray emission during 2011 February, when the system exhibited an X-ray outburst. We find no \gamma-ray signal in the other observation periods when the system did not show increased X-ray flux. Thus HESS J0632+057 exhibits \gamma-ray variability on timescales of the order of one to two months possibly linked to the X-ray outburst that takes place about 100 days after the periastron passage. Furthermore our measurements provide for the first time the \gamma-ray spectrum down to about 140 GeV and indicate no turnover of the spectrum at low energies. We compare the properties of HESS J0632+057 with the similar \gamma-ray binary LS I +61 303, and discuss on the possible origin of the multi-wavelength emission of the source | - |
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/10.1088/2041-8205/754/1/L10 | - |
dc.relation.ispartof | Astrophysical Journal Letters, 2012, vol. 754, num. 1, p. 10A | - |
dc.relation.uri | https://doi.org/10.1088/2041-8205/754/1/L10 | - |
dc.rights | (c) American Astronomical Society, 2012 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Estels binaris de raigs X | - |
dc.subject.classification | Raigs gamma | - |
dc.subject.other | X-ray binaries | - |
dc.subject.other | Gamma rays | - |
dc.title | Detection of VHE γ-Rays from HESS J0632+057 during the 2011 February X-Ray Outburst with the MAGIC Telescopes | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 617033 | - |
dc.date.updated | 2020-02-25T10:45:10Z | - |
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 | |
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617033.pdf | 149.17 kB | Adobe PDF | View/Open |
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