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The star forming region Monoceros R2 as a gamma-ray source

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http://dx.doi.org/10.1051/0004-6361/201220791

Resum

After the release of the gamma-ray source catalog produced by the Fermi satellite during its first two years of operation, a significant fraction of sources still remain unassociated at lower energies. In addition to well-known high-energy emitters (pulsars, blazars, supernova remnants, etc.), theoretical expectations predict new classes of gamma-ray sources. In particular, gamma-ray emission could be associated with some of the early phases of stellar evolution, but this interesting possibility is still poorly understood. Aims: The aim of this paper is to assess the possibility of the Fermi gamma-ray source 2FGL J0607.5-0618c being associated with the massive star forming region Monoceros R2. Methods: A multi-wavelength analysis of the Monoceros R2 region is carried out using archival data at radio, infrared, X-ray, and gamma-ray wavelengths. The resulting observational properties are used to estimate the physical parameters needed to test the different physical scenarios. Results: We confirm the 2FGL J0607.5-0618c detection with improved confidence over the Fermi two-year catalog. We find that a combined effect of the multiple young stellar objects in Monoceros R2 is a viable picture for the nature of the source.

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Estels, Formació d'estels, Astronomia de raigs gamma, Astronomia de raigs X, Radioastronomia

Matèries (anglès)

Stars, Star formation, Gamma ray astronomy, X-ray astronomy, Radio astronomy

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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MARTÍ RIBAS, Josep, LUQUE ESCAMILLA, Pedro l., MUÑOZ-ARJONILLA, A. j., SÁNCHEZ-AYASO, Estrella, MUNAR I ADROVER, Pere, SÁNCHEZ-SUTIL, J. r., ROMERO, Gustavo e., PAREDES I POY, Josep maria, COMBI, J. a.. The star forming region Monoceros R2 as a gamma-ray source. _Astronomy and Astrophysics_. 2013. Vol. 556, núm. A131, pàgs. 1-8. [consulta: 25 de febrer de 2026]. ISSN: 0004-6361. [Disponible a: https://hdl.handle.net/2445/48353]

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