文章基本信息

标题：The compact radio counterpart of IGR J20187+4041 near the flaring source AGL 2021+4029 and 3EG J2020+4017
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作者：Z. Paragi ; A. Trejo Cruz ; E. Giacani 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2008
卷号：2008
期号：(02)
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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 g Cygni supernova remnant (SNR). The brightest unidentified EGRET source 3EG J2020+4017 is also located in the g 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-VLBIis a technique which makes it possible to image the structure of radio sources at the highest angular resolution on a very short timescale.