| HAL : hal-00398778, version 1 |
| arXiv : 0906.3411 |
| DOI : 10.1111/j.1365-2966.2009.15272.x |
| Fiche détaillée | Récupérer au format |
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| Monthly Notices of the Royal Astronomical Society 399, 1 (2009) 317 - 322 |
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| The radio counterpart of the likely TeV binary HESS J0632+057 |
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| J. L. SkiltonM. Pandey-PommierJ. A. HintonC. C. CheungF. A. AharonianJ. BruckerG. Dubus1Armand Fiasson2, 3S. FunkYves Gallant2Alexandre Marcowith2O. Reimer |
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| (20/10/2009) |
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| The few known gamma-ray binary systems are all associated with variable radioand X-ray emission. The TeV source HESS J0632+057, apparently associated withthe Be star MWC148, is plausibly a new member of this class. Following theidentification of a variable X-ray counterpart to the TeV source we conductedGMRT and VLA observations in June-September 2008 to search for the radiocounterpart of this object. A point-like radio source at the position of thestar is detected in both 1280 MHz GMRT and 5 GHz VLA observations, with anaverage spectral index, alpha, of ~0.6. In the VLA data there is significantflux variability on ~month timescales around the mean flux density of ~0.3 mJy.These radio properties (and the overall spectral energy distribution) areconsistent with an interpretation of HESS J0632+057 as a lower power analogueof the established gamma-ray binary systems. |
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| 1 : | LAOG - Laboratoire d'Astrophysique de Grenoble |
| 2 : | LPTA - Laboratoire de Physique Théorique et Astroparticules |
| 3 : | LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules |
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| Domaine | : | Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie |
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| radio-continuum:stars – X-rays:binaries |
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| Lien vers le texte intégral : |
| hal-00398778, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00398778 | |
| oai:hal.archives-ouvertes.fr:hal-00398778 | |
| Contributeur : Logiciel Aigle | |
| Déposé pour le compte de : | |
| Soumis le : Mercredi 24 Juin 2009, 17:47:18 | |
| Dernière modification le : Jeudi 5 Novembre 2009, 17:46:51 | |