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Torres, D.F.; Li, H.; Chen, Y.; Cillis, A.; Caliandro, A.G.; Rodríguez-Marrero, A.Y. "Cosmic rays in the surroundings of SNR G35.6-0.4" (2011) Monthly Notices of the Royal Astronomical Society. 417(4):3072-3079
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Abstract:

HESS J1858+020 is a TeV gamma-ray source that was reported to have no clearly catalogued counterpart at any wavelength. However, it has been recently proposed that this source is indirectly associated with the radio source, re-identified as a supernova remnant (SNR), G35.6-0.4. The latter has been found to be middle-aged (~30 kyr) and to have nearby molecular clouds (MCs). HESS J1858+020 was proposed to be the result of the interaction of protons accelerated in the SNR shell with target ions residing in the clouds. The Fermi Large Area Telescope (LAT) First Source Catalog does not list any source coincident with the position of HESS J1858+020, but some lie close. Here, we analyse more than 2 years of data obtained with the Fermi-LAT for the region of interest, and consider whether it is indeed possible that the closest LAT source, 1FGL J1857.1+0212c, is related to HESS J1858+020. We conclude it is not, and we impose upper limits on the GeV emission originating from HESS J1858+020. Using a simplified 3D model for the cosmic ray propagation out from the shell of the SNR, we consider whether the interaction between SNR G35.6-0.4 and the MCs nearby could give rise to the TeV emission of HESS J1858+020 without producing a GeV counterpart. If so, the pair of SNR/TeV source with no GeV detection would be reminiscent of other similarly aged SNRs, such as some of the TeV hotspots near W28, for which cosmic ray diffusion may be used to explain their multifrequency phenomenology. However, for HESS J1858+020, we found that although the phase space in principle allows such a GeV-TeV non-correlation to appear, usual and/or observationally constrained values of the parameters (e.g., diffusion coefficients and cloud-SNR likely distances) would disfavour it. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

Registro:

Documento: Artículo
Título:Cosmic rays in the surroundings of SNR G35.6-0.4
Autor:Torres, D.F.; Li, H.; Chen, Y.; Cillis, A.; Caliandro, A.G.; Rodríguez-Marrero, A.Y.
Filiación:Institució Catalana de Recerca i Estudis Avançats (ICREA), 08193 Barcelona, Spain
Institut de Ciències de l'Espai (IEEC-CSIC), Campus UAB, Torre C5, 2a planta, 08193 Barcelona, Spain
Department of Astronomy, Nanjing University, Nanjing 210093, China
Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China
Instituto de Astronomía y Física del Espacio (CONICET-UBA), CC67, Suc. 28, 1428 Buenos Aires, Argentina
Instituto de Física de Cantabria, Edificio Juan Jordá, Avenida de los Castros s/n, 39005 Santander, Cantabria, Spain
Palabras clave:ISM: supernova remnants
Año:2011
Volumen:417
Número:4
Página de inicio:3072
Página de fin:3079
DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19465.x
Título revista:Monthly Notices of the Royal Astronomical Society
Título revista abreviado:Mon. Not. R. Astron. Soc.
ISSN:00358711
CODEN:MNRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00358711_v417_n4_p3072_Torres

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Citas:

---------- APA ----------
Torres, D.F., Li, H., Chen, Y., Cillis, A., Caliandro, A.G. & Rodríguez-Marrero, A.Y. (2011) . Cosmic rays in the surroundings of SNR G35.6-0.4. Monthly Notices of the Royal Astronomical Society, 417(4), 3072-3079.
http://dx.doi.org/10.1111/j.1365-2966.2011.19465.x
---------- CHICAGO ----------
Torres, D.F., Li, H., Chen, Y., Cillis, A., Caliandro, A.G., Rodríguez-Marrero, A.Y. "Cosmic rays in the surroundings of SNR G35.6-0.4" . Monthly Notices of the Royal Astronomical Society 417, no. 4 (2011) : 3072-3079.
http://dx.doi.org/10.1111/j.1365-2966.2011.19465.x
---------- MLA ----------
Torres, D.F., Li, H., Chen, Y., Cillis, A., Caliandro, A.G., Rodríguez-Marrero, A.Y. "Cosmic rays in the surroundings of SNR G35.6-0.4" . Monthly Notices of the Royal Astronomical Society, vol. 417, no. 4, 2011, pp. 3072-3079.
http://dx.doi.org/10.1111/j.1365-2966.2011.19465.x
---------- VANCOUVER ----------
Torres, D.F., Li, H., Chen, Y., Cillis, A., Caliandro, A.G., Rodríguez-Marrero, A.Y. Cosmic rays in the surroundings of SNR G35.6-0.4. Mon. Not. R. Astron. Soc. 2011;417(4):3072-3079.
http://dx.doi.org/10.1111/j.1365-2966.2011.19465.x