Very long baseline interferometry search for the radio counterpart of HESS J1943+213

HESS J1943+213, a TeV point source close to the Galactic plane recently discovered by the H.E.S.S. Collaboration, was proposed to be an extreme BL Lacertae object, though a pulsar wind nebula (PWN) nature could not be completely discarded. To investigate its nature, we performed high-resolution radi...

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Detalles Bibliográficos
Publicado: 2013
Materias:
ISM: supernova remnants
radio continuum: general
radio lines: ISM
techniques: interferometric
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v762_n1_p_Gabanyi
http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n1_p_Gabanyi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0004637X_v762_n1_p_Gabanyi
record_format dspace
spelling paper:paper_0004637X_v762_n1_p_Gabanyi2023-06-08T14:29:09Z Very long baseline interferometry search for the radio counterpart of HESS J1943+213 ISM: supernova remnants radio continuum: general radio lines: ISM techniques: interferometric HESS J1943+213, a TeV point source close to the Galactic plane recently discovered by the H.E.S.S. Collaboration, was proposed to be an extreme BL Lacertae object, though a pulsar wind nebula (PWN) nature could not be completely discarded. To investigate its nature, we performed high-resolution radio observations with the European Very Long Baseline Interferometry Network (EVN) and reanalyzed archival continuum and H I data. The EVN observations revealed a compact radio counterpart of the TeV source. The low brightness temperature and the resolved nature of the radio source are indications against the beamed BL Lacertae hypothesis. The radio/X-ray source appears immersed in a ∼1′ elliptical feature, suggesting a possible galactic origin (PWN nature) for the HESS source. We found that HESS J1943+213 is located in the interior of a ∼1° diameter H I feature and explored the possibility of them being physically related. © 2013. The American Astronomical Society. All rights reserved. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v762_n1_p_Gabanyi http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n1_p_Gabanyi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic ISM: supernova remnants
radio continuum: general
radio lines: ISM
techniques: interferometric
spellingShingle ISM: supernova remnants
radio continuum: general
radio lines: ISM
techniques: interferometric
Very long baseline interferometry search for the radio counterpart of HESS J1943+213
topic_facet ISM: supernova remnants
radio continuum: general
radio lines: ISM
techniques: interferometric
description HESS J1943+213, a TeV point source close to the Galactic plane recently discovered by the H.E.S.S. Collaboration, was proposed to be an extreme BL Lacertae object, though a pulsar wind nebula (PWN) nature could not be completely discarded. To investigate its nature, we performed high-resolution radio observations with the European Very Long Baseline Interferometry Network (EVN) and reanalyzed archival continuum and H I data. The EVN observations revealed a compact radio counterpart of the TeV source. The low brightness temperature and the resolved nature of the radio source are indications against the beamed BL Lacertae hypothesis. The radio/X-ray source appears immersed in a ∼1′ elliptical feature, suggesting a possible galactic origin (PWN nature) for the HESS source. We found that HESS J1943+213 is located in the interior of a ∼1° diameter H I feature and explored the possibility of them being physically related. © 2013. The American Astronomical Society. All rights reserved.
title Very long baseline interferometry search for the radio counterpart of HESS J1943+213
title_short Very long baseline interferometry search for the radio counterpart of HESS J1943+213
title_full Very long baseline interferometry search for the radio counterpart of HESS J1943+213
title_fullStr Very long baseline interferometry search for the radio counterpart of HESS J1943+213
title_full_unstemmed Very long baseline interferometry search for the radio counterpart of HESS J1943+213
title_sort very long baseline interferometry search for the radio counterpart of hess j1943+213
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v762_n1_p_Gabanyi
http://hdl.handle.net/20.500.12110/paper_0004637X_v762_n1_p_Gabanyi
_version_ 1768543112713469952

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