Radio continuum and near-infrared study of the MGRO J2019+37 region
Context. MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as the brightest TeV source in the Cygnus region. Its extended emission could be powered by either a single or several sources. The GeV pulsar AGL J2020.5+3653, d...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2009-11, Vol.507 (1), p.241-250 |
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| creator | PAREDES, J. M MARTI, J BORDAS, P ROMERO, G. E RIBO, M ISHWARA-CHANDRA, C. H SANCHEZ-SUTIL, J. R MUNOZ-ARJONILLA, A. J MOLDON, J PERACAULA, M LUQUE-ESCAMILLA, P. L ZABALZA, V BOSCH-RAMON, V |
| description | Context. MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as the brightest TeV source in the Cygnus region. Its extended emission could be powered by either a single or several sources. The GeV pulsar AGL J2020.5+3653, discovered by AGILE and associated with PSR J2021+3651, could contribute to the emission from MGRO J2019+37. Aims. Our aim is to identify radio and near-infrared sources in the field of the extended TeV source MGRO J2019+37, and study potential counterparts to explain its emission. Methods. We surveyed a region of about 6 square degrees with the Giant Metrewave Radio Telescope (GMRT) at the frequency 610 MHz. We also observed the central square degree of this survey in the near-infrared -band using the 3.5 m telescope in Calar Alto. Archival X-ray observations of some specific fields are included. VLBI observations of an interesting radio source were performed. We explored possible scenarios to produce the multi-TeV emission from MGRO J2019+37 and studied which of the sources could be the main particle accelerator. Results. We present a catalogue of 362 radio sources detected with the GMRT in the field of MGRO J2019+37, and the results of a cross-correlation of this catalog with one obtained at near-infrared wavelengths, which contains sources, as well as with available X-ray observations of the region. Some peculiar sources inside the 1 uncertainty region of the TeV emission from MGRO J2019+37 are discussed in detail, including the pulsar PSR J2021+3651 and its pulsar wind nebula PWN G75.2+0.1, two new radio-jet sources, the H II region Sh 2-104 containing two star clusters, and the radio source NVSS J202032+363158. We also find that the hadronic scenario is the most likely in case of a single accelerator, and discuss the possible contribution from the sources mentioned above. Conclusions. Although the radio and GeV pulsar PSR J2021+3651 / AGL J2020.5+3653 and its associated pulsar wind nebula PWN G75.2+0.1 can contribute to the emission from MGRO J2019+37, extrapolation of the GeV spectrum does not explain the detected multi-TeV flux. Other sources discussed here could contribute to the emission of the Milagro source. |
| doi_str_mv | 10.1051/0004-6361/200912448 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_csuc_</sourceid><recordid>TN_cdi_csuc_recercat_oai_recercat_cat_2072_263143</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>745938760</sourcerecordid><originalsourceid>FETCH-LOGICAL-c398t-59f1aba67c32e3a601a4cb5df54183b5abe156243a1825f7505fbcdb71934eaa3</originalsourceid><addsrcrecordid>eNpFkU1LAzEQhoMoWD9-gZdcxIOszXd2j1K0KpVC0XOYzSa6ss3WZPfQf29KSz0Mw8D7vsw8g9ANJQ-USDolhIhCcUWnjJCKMiHKEzShgrOCaKFO0eSoOEcXKf3kkdGST9BsBU3bY9uHoQ3juMYQGhwcxKINPkJ0DU7D2Gxx7_Hw7fD7fLXEb4zQ6p5rHN1X24crdOahS-760C_R5_PTx-ylWCznr7PHRWF5VQ6FrDyFGpS2nDkOilAQtpaNlyKvUkuoHZWKCQ60ZNJrSaSvbVNrWnHhAPglovtcm0ZrorMuWhhMD-3_sCtGNDNM8Xx_9tztPZvY_44uDWbdJuu6DoLrx2S0kBUvtSJZyQ_psU8pOm82sV1D3BpKzI6y2TE0O4bmSDm7bg_5kCx0GVmwbTpaGaNa5DfwPyFmeWM</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>745938760</pqid></control><display><type>article</type><title>Radio continuum and near-infrared study of the MGRO J2019+37 region</title><source>Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX</source><source>EDP Sciences</source><source>Recercat</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>PAREDES, J. M ; MARTI, J ; BORDAS, P ; ROMERO, G. E ; RIBO, M ; ISHWARA-CHANDRA, C. H ; SANCHEZ-SUTIL, J. R ; MUNOZ-ARJONILLA, A. J ; MOLDON, J ; PERACAULA, M ; LUQUE-ESCAMILLA, P. L ; ZABALZA, V ; BOSCH-RAMON, V</creator><creatorcontrib>PAREDES, J. M ; MARTI, J ; BORDAS, P ; ROMERO, G. E ; RIBO, M ; ISHWARA-CHANDRA, C. H ; SANCHEZ-SUTIL, J. R ; MUNOZ-ARJONILLA, A. J ; MOLDON, J ; PERACAULA, M ; LUQUE-ESCAMILLA, P. L ; ZABALZA, V ; BOSCH-RAMON, V</creatorcontrib><description>Context. MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as the brightest TeV source in the Cygnus region. Its extended emission could be powered by either a single or several sources. The GeV pulsar AGL J2020.5+3653, discovered by AGILE and associated with PSR J2021+3651, could contribute to the emission from MGRO J2019+37. Aims. Our aim is to identify radio and near-infrared sources in the field of the extended TeV source MGRO J2019+37, and study potential counterparts to explain its emission. Methods. We surveyed a region of about 6 square degrees with the Giant Metrewave Radio Telescope (GMRT) at the frequency 610 MHz. We also observed the central square degree of this survey in the near-infrared -band using the 3.5 m telescope in Calar Alto. Archival X-ray observations of some specific fields are included. VLBI observations of an interesting radio source were performed. We explored possible scenarios to produce the multi-TeV emission from MGRO J2019+37 and studied which of the sources could be the main particle accelerator. Results. We present a catalogue of 362 radio sources detected with the GMRT in the field of MGRO J2019+37, and the results of a cross-correlation of this catalog with one obtained at near-infrared wavelengths, which contains sources, as well as with available X-ray observations of the region. Some peculiar sources inside the 1 uncertainty region of the TeV emission from MGRO J2019+37 are discussed in detail, including the pulsar PSR J2021+3651 and its pulsar wind nebula PWN G75.2+0.1, two new radio-jet sources, the H II region Sh 2-104 containing two star clusters, and the radio source NVSS J202032+363158. We also find that the hadronic scenario is the most likely in case of a single accelerator, and discuss the possible contribution from the sources mentioned above. Conclusions. Although the radio and GeV pulsar PSR J2021+3651 / AGL J2020.5+3653 and its associated pulsar wind nebula PWN G75.2+0.1 can contribute to the emission from MGRO J2019+37, extrapolation of the GeV spectrum does not explain the detected multi-TeV flux. Other sources discussed here could contribute to the emission of the Milagro source.</description><identifier>ISSN: 0004-6361</identifier><identifier>EISSN: 1432-0746</identifier><identifier>DOI: 10.1051/0004-6361/200912448</identifier><identifier>CODEN: AAEJAF</identifier><language>eng</language><publisher>Les Ulis: EDP Sciences</publisher><subject>Astronomy ; Earth, ocean, space ; Estels ; Exact sciences and technology ; Gamma rays ; Radiació ; Radiation ; Raigs gamma ; Raigs X ; Stars ; X-rays</subject><ispartof>Astronomy and astrophysics (Berlin), 2009-11, Vol.507 (1), p.241-250</ispartof><rights>2015 INIST-CNRS</rights><rights>(c) Springer Verlag, 2009 info:eu-repo/semantics/openAccess</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c398t-59f1aba67c32e3a601a4cb5df54183b5abe156243a1825f7505fbcdb71934eaa3</citedby><cites>FETCH-LOGICAL-c398t-59f1aba67c32e3a601a4cb5df54183b5abe156243a1825f7505fbcdb71934eaa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3714,26951,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22174432$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>PAREDES, J. M</creatorcontrib><creatorcontrib>MARTI, J</creatorcontrib><creatorcontrib>BORDAS, P</creatorcontrib><creatorcontrib>ROMERO, G. E</creatorcontrib><creatorcontrib>RIBO, M</creatorcontrib><creatorcontrib>ISHWARA-CHANDRA, C. H</creatorcontrib><creatorcontrib>SANCHEZ-SUTIL, J. R</creatorcontrib><creatorcontrib>MUNOZ-ARJONILLA, A. J</creatorcontrib><creatorcontrib>MOLDON, J</creatorcontrib><creatorcontrib>PERACAULA, M</creatorcontrib><creatorcontrib>LUQUE-ESCAMILLA, P. L</creatorcontrib><creatorcontrib>ZABALZA, V</creatorcontrib><creatorcontrib>BOSCH-RAMON, V</creatorcontrib><title>Radio continuum and near-infrared study of the MGRO J2019+37 region</title><title>Astronomy and astrophysics (Berlin)</title><description>Context. MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as the brightest TeV source in the Cygnus region. Its extended emission could be powered by either a single or several sources. The GeV pulsar AGL J2020.5+3653, discovered by AGILE and associated with PSR J2021+3651, could contribute to the emission from MGRO J2019+37. Aims. Our aim is to identify radio and near-infrared sources in the field of the extended TeV source MGRO J2019+37, and study potential counterparts to explain its emission. Methods. We surveyed a region of about 6 square degrees with the Giant Metrewave Radio Telescope (GMRT) at the frequency 610 MHz. We also observed the central square degree of this survey in the near-infrared -band using the 3.5 m telescope in Calar Alto. Archival X-ray observations of some specific fields are included. VLBI observations of an interesting radio source were performed. We explored possible scenarios to produce the multi-TeV emission from MGRO J2019+37 and studied which of the sources could be the main particle accelerator. Results. We present a catalogue of 362 radio sources detected with the GMRT in the field of MGRO J2019+37, and the results of a cross-correlation of this catalog with one obtained at near-infrared wavelengths, which contains sources, as well as with available X-ray observations of the region. Some peculiar sources inside the 1 uncertainty region of the TeV emission from MGRO J2019+37 are discussed in detail, including the pulsar PSR J2021+3651 and its pulsar wind nebula PWN G75.2+0.1, two new radio-jet sources, the H II region Sh 2-104 containing two star clusters, and the radio source NVSS J202032+363158. We also find that the hadronic scenario is the most likely in case of a single accelerator, and discuss the possible contribution from the sources mentioned above. Conclusions. Although the radio and GeV pulsar PSR J2021+3651 / AGL J2020.5+3653 and its associated pulsar wind nebula PWN G75.2+0.1 can contribute to the emission from MGRO J2019+37, extrapolation of the GeV spectrum does not explain the detected multi-TeV flux. Other sources discussed here could contribute to the emission of the Milagro source.</description><subject>Astronomy</subject><subject>Earth, ocean, space</subject><subject>Estels</subject><subject>Exact sciences and technology</subject><subject>Gamma rays</subject><subject>Radiació</subject><subject>Radiation</subject><subject>Raigs gamma</subject><subject>Raigs X</subject><subject>Stars</subject><subject>X-rays</subject><issn>0004-6361</issn><issn>1432-0746</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>XX2</sourceid><recordid>eNpFkU1LAzEQhoMoWD9-gZdcxIOszXd2j1K0KpVC0XOYzSa6ss3WZPfQf29KSz0Mw8D7vsw8g9ANJQ-USDolhIhCcUWnjJCKMiHKEzShgrOCaKFO0eSoOEcXKf3kkdGST9BsBU3bY9uHoQ3juMYQGhwcxKINPkJ0DU7D2Gxx7_Hw7fD7fLXEb4zQ6p5rHN1X24crdOahS-760C_R5_PTx-ylWCznr7PHRWF5VQ6FrDyFGpS2nDkOilAQtpaNlyKvUkuoHZWKCQ60ZNJrSaSvbVNrWnHhAPglovtcm0ZrorMuWhhMD-3_sCtGNDNM8Xx_9tztPZvY_44uDWbdJuu6DoLrx2S0kBUvtSJZyQ_psU8pOm82sV1D3BpKzI6y2TE0O4bmSDm7bg_5kCx0GVmwbTpaGaNa5DfwPyFmeWM</recordid><startdate>20091101</startdate><enddate>20091101</enddate><creator>PAREDES, J. M</creator><creator>MARTI, J</creator><creator>BORDAS, P</creator><creator>ROMERO, G. E</creator><creator>RIBO, M</creator><creator>ISHWARA-CHANDRA, C. H</creator><creator>SANCHEZ-SUTIL, J. R</creator><creator>MUNOZ-ARJONILLA, A. J</creator><creator>MOLDON, J</creator><creator>PERACAULA, M</creator><creator>LUQUE-ESCAMILLA, P. L</creator><creator>ZABALZA, V</creator><creator>BOSCH-RAMON, V</creator><general>EDP Sciences</general><general>Springer Verlag</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>XX2</scope></search><sort><creationdate>20091101</creationdate><title>Radio continuum and near-infrared study of the MGRO J2019+37 region</title><author>PAREDES, J. M ; MARTI, J ; BORDAS, P ; ROMERO, G. E ; RIBO, M ; ISHWARA-CHANDRA, C. H ; SANCHEZ-SUTIL, J. R ; MUNOZ-ARJONILLA, A. J ; MOLDON, J ; PERACAULA, M ; LUQUE-ESCAMILLA, P. L ; ZABALZA, V ; BOSCH-RAMON, V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-59f1aba67c32e3a601a4cb5df54183b5abe156243a1825f7505fbcdb71934eaa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Astronomy</topic><topic>Earth, ocean, space</topic><topic>Estels</topic><topic>Exact sciences and technology</topic><topic>Gamma rays</topic><topic>Radiació</topic><topic>Radiation</topic><topic>Raigs gamma</topic><topic>Raigs X</topic><topic>Stars</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>PAREDES, J. M</creatorcontrib><creatorcontrib>MARTI, J</creatorcontrib><creatorcontrib>BORDAS, P</creatorcontrib><creatorcontrib>ROMERO, G. E</creatorcontrib><creatorcontrib>RIBO, M</creatorcontrib><creatorcontrib>ISHWARA-CHANDRA, C. H</creatorcontrib><creatorcontrib>SANCHEZ-SUTIL, J. R</creatorcontrib><creatorcontrib>MUNOZ-ARJONILLA, A. J</creatorcontrib><creatorcontrib>MOLDON, J</creatorcontrib><creatorcontrib>PERACAULA, M</creatorcontrib><creatorcontrib>LUQUE-ESCAMILLA, P. L</creatorcontrib><creatorcontrib>ZABALZA, V</creatorcontrib><creatorcontrib>BOSCH-RAMON, V</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Recercat</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>PAREDES, J. M</au><au>MARTI, J</au><au>BORDAS, P</au><au>ROMERO, G. E</au><au>RIBO, M</au><au>ISHWARA-CHANDRA, C. H</au><au>SANCHEZ-SUTIL, J. R</au><au>MUNOZ-ARJONILLA, A. J</au><au>MOLDON, J</au><au>PERACAULA, M</au><au>LUQUE-ESCAMILLA, P. L</au><au>ZABALZA, V</au><au>BOSCH-RAMON, V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Radio continuum and near-infrared study of the MGRO J2019+37 region</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2009-11-01</date><risdate>2009</risdate><volume>507</volume><issue>1</issue><spage>241</spage><epage>250</epage><pages>241-250</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><coden>AAEJAF</coden><abstract>Context. MGRO J2019+37 is an unidentified extended source of very high energy gamma-rays originally reported by the Milagro Collaboration as the brightest TeV source in the Cygnus region. Its extended emission could be powered by either a single or several sources. The GeV pulsar AGL J2020.5+3653, discovered by AGILE and associated with PSR J2021+3651, could contribute to the emission from MGRO J2019+37. Aims. Our aim is to identify radio and near-infrared sources in the field of the extended TeV source MGRO J2019+37, and study potential counterparts to explain its emission. Methods. We surveyed a region of about 6 square degrees with the Giant Metrewave Radio Telescope (GMRT) at the frequency 610 MHz. We also observed the central square degree of this survey in the near-infrared -band using the 3.5 m telescope in Calar Alto. Archival X-ray observations of some specific fields are included. VLBI observations of an interesting radio source were performed. We explored possible scenarios to produce the multi-TeV emission from MGRO J2019+37 and studied which of the sources could be the main particle accelerator. Results. We present a catalogue of 362 radio sources detected with the GMRT in the field of MGRO J2019+37, and the results of a cross-correlation of this catalog with one obtained at near-infrared wavelengths, which contains sources, as well as with available X-ray observations of the region. Some peculiar sources inside the 1 uncertainty region of the TeV emission from MGRO J2019+37 are discussed in detail, including the pulsar PSR J2021+3651 and its pulsar wind nebula PWN G75.2+0.1, two new radio-jet sources, the H II region Sh 2-104 containing two star clusters, and the radio source NVSS J202032+363158. We also find that the hadronic scenario is the most likely in case of a single accelerator, and discuss the possible contribution from the sources mentioned above. Conclusions. Although the radio and GeV pulsar PSR J2021+3651 / AGL J2020.5+3653 and its associated pulsar wind nebula PWN G75.2+0.1 can contribute to the emission from MGRO J2019+37, extrapolation of the GeV spectrum does not explain the detected multi-TeV flux. Other sources discussed here could contribute to the emission of the Milagro source.</abstract><cop>Les Ulis</cop><pub>EDP Sciences</pub><doi>10.1051/0004-6361/200912448</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; EDP Sciences; Recercat; EZB-FREE-00999 freely available EZB journals |
| subjects | Astronomy Earth, ocean, space Estels Exact sciences and technology Gamma rays Radiació Radiation Raigs gamma Raigs X Stars X-rays |
| title | Radio continuum and near-infrared study of the MGRO J2019+37 region |
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