Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/151125
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dc.contributor.authorParedes i Poy, Josep Maria-
dc.contributor.authorMunar i Adrover, Pere-
dc.contributor.authorRibó Gomis, Marc-
dc.contributor.authorBosch i Ramon, Valentí-
dc.contributor.authorMoldón Vara, Francisco Javier-
dc.date.accessioned2020-02-25T10:45:10Z-
dc.date.available2020-02-25T10:45:10Z-
dc.date.issued2012-07-05-
dc.identifier.issn2041-8205-
dc.identifier.urihttp://hdl.handle.net/2445/151125-
dc.description.abstractThe 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.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherInstitute of Physics (IOP)-
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1088/2041-8205/754/1/L10-
dc.relation.ispartofAstrophysical Journal Letters, 2012, vol. 754, num. 1, p. 10A-
dc.relation.urihttps://doi.org/10.1088/2041-8205/754/1/L10-
dc.rights(c) American Astronomical Society, 2012-
dc.subject.classificationEstels binaris de raigs X-
dc.subject.classificationRaigs gamma-
dc.subject.otherX-ray binaries-
dc.subject.otherGamma rays-
dc.titleDetection of VHE γ-Rays from HESS J0632+057 during the 2011 February X-Ray Outburst with the MAGIC Telescopes-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec617033-
dc.date.updated2020-02-25T10:45:10Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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