2006年
Milliarcsecond-scale structure in the gamma-ray loud quasar PKS 1622-297
Publications of the Astronomical Society of Japan
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- 巻
- 58
- 号
- 2
- 開始ページ
- 223
- 終了ページ
- 232
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/pasj/58.2.223
We made a high-resolution VLBI observation of the gamma-ray loud quasar PKS 1622-297 with the HALCA spacecraft and ground radio telescopes at 5 GHz in 1998 February, almost 3 yr after the source exhibited a spectacular GeV gamma-ray flare. The source shows an elongated structure toward the west on the parsec scale. The visibility data are well modeled by three distinct components: a bright core and two weaker jet components. Comparison with previous observations confirms that the jet components have an apparent superluminal motion up to 12. l h-1 c, with the inner jet components having lower superluminal speeds. We applied the inverse Compton catastrophe model and derived a Doppler factor, δ, of 2.45, which is rather lower than those of other gamma-ray loud active galactic nuclei (AGNs), suggesting that the source was in a more quiescent phase at the epoch of our observation. As an alternative probe of the subparsec-scale structure, we also present the results from multiepoch ATCA total flux monitoring, which indicate the presence of persistent intraday variability consistent with refractive interstellar scintillation. We examined the gamma-ray emission mechanism in light of these observations. © 2006. Astronomical Society of Japan.
- リンク情報
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- DOI
- https://doi.org/10.1093/pasj/58.2.223
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000237491800003&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33646759234&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=33646759234&origin=inward
- ID情報
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- DOI : 10.1093/pasj/58.2.223
- ISSN : 0004-6264
- SCOPUS ID : 33646759234
- Web of Science ID : WOS:000237491800003