The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017

We present radio results fromshort e-EVN (EuropeanVLBI network) observations of the counterpart to IGR J20187+4041, a hard X-ray source projected against the γ Cygni supernova remnant (SNR). The brightest unidentified EGRET source 3EG J2020+4017 is also located in the γ Cygni region, though its rela...

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Guardado en:
Detalles Bibliográficos
Publicado: 2008
Materias:
Angular resolution
Compact objects
Compact structures
Flaring activity
Hard X-ray sources
Radio sources
Supernova remnants
Time-scales
Gamma rays
Radio astronomy
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13138502_v_n_p_Paragi
http://hdl.handle.net/20.500.12110/paper_13138502_v_n_p_Paragi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_13138502_v_n_p_Paragi
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spelling paper:paper_13138502_v_n_p_Paragi2023-06-08T16:10:19Z The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017 Angular resolution Compact objects Compact structures Flaring activity Hard X-ray sources Radio sources Supernova remnants Time-scales Gamma rays Radio astronomy We present radio results fromshort e-EVN (EuropeanVLBI network) observations of the counterpart to IGR J20187+4041, a hard X-ray source projected against the γ Cygni supernova remnant (SNR). The brightest unidentified EGRET source 3EG J2020+4017 is also located in the γ Cygni region, though its relation to IGR J20187+4041 has not been well established yet. The e-EVN observations were carried out following the AGILE detection of gamma-ray flaring activity in the region. Our observations show that the radio counterpart to the IGR source has a compact structure on the ∼ 10 mas scales that could be related to a compact object, but no radio flaring activity has been observed. e-VLBI*is a technique which makes it possible to image the structure of radio sources at the highest angular resolution on a very short timescale. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13138502_v_n_p_Paragi http://hdl.handle.net/20.500.12110/paper_13138502_v_n_p_Paragi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Angular resolution
Compact objects
Compact structures
Flaring activity
Hard X-ray sources
Radio sources
Supernova remnants
Time-scales
Gamma rays
Radio astronomy
spellingShingle Angular resolution
Compact objects
Compact structures
Flaring activity
Hard X-ray sources
Radio sources
Supernova remnants
Time-scales
Gamma rays
Radio astronomy
The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
topic_facet Angular resolution
Compact objects
Compact structures
Flaring activity
Hard X-ray sources
Radio sources
Supernova remnants
Time-scales
Gamma rays
Radio astronomy
description We present radio results fromshort e-EVN (EuropeanVLBI network) observations of the counterpart to IGR J20187+4041, a hard X-ray source projected against the γ Cygni supernova remnant (SNR). The brightest unidentified EGRET source 3EG J2020+4017 is also located in the γ Cygni region, though its relation to IGR J20187+4041 has not been well established yet. The e-EVN observations were carried out following the AGILE detection of gamma-ray flaring activity in the region. Our observations show that the radio counterpart to the IGR source has a compact structure on the ∼ 10 mas scales that could be related to a compact object, but no radio flaring activity has been observed. e-VLBI*is a technique which makes it possible to image the structure of radio sources at the highest angular resolution on a very short timescale. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
title The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
title_short The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
title_full The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
title_fullStr The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
title_full_unstemmed The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
title_sort compact radio counterpart of igr j20187+4041 near the flaring source agl 2021+4029 and 3eg j2020+4017
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13138502_v_n_p_Paragi
http://hdl.handle.net/20.500.12110/paper_13138502_v_n_p_Paragi
_version_ 1768543766204907520

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