Jun 25, 2013
Multifrequency VLBI Observations of the Broad Absorption Line Quasar J1020 4320: Recently Restarted Jet Activity?
Publications of the Astronomical Society of Japan
- Volume
- 65
- Number
- 3
- First page
- 57
- Last page
- 57
- Language
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1093/pasj/65.3.57
- Publisher
- Oxford University Press (OUP)
This paper reports on very-long-baseline interferometry observations of the radio-loud broad absorption line (BAL) quasar J1020+4320 at 1.7, 2.3, 6.7, and 8.4 GHz using the Japanese VLBI network (JVN) and European VLBI network (EVN). The radio morphology is compact with a size of -10 pc. The convex radio spectrum has been stable over the last decade; an observed peak frequency of 3.2 GHz is equivalent to 9.5 GHz in the rest frame, suggesting an age on the order of -100 years as a radio source, according to an observed correlation between the linear size and the peak frequency of compact steep spectrum (CSS) and giga-hertz peaked spectrum (GPS) radio sources. A low-frequency radio excess suggests a relic of past jet activity. J1020+4320 may be one of the quasars with recurrent and short-lived jet activity during a BAL-outflowing phase. © 2013. Astronomical Society of Japan.
- Link information
-
- DOI
- https://doi.org/10.1093/pasj/65.3.57
- URL
- http://academic.oup.com/pasj/article-pdf/65/3/57/17457051/pasj65-0057.pdf
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84879988148&origin=inward Open access
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=84879988148&origin=inward
- ID information
-
- DOI : 10.1093/pasj/65.3.57
- ISSN : 0004-6264
- eISSN : 2053-051X
- SCOPUS ID : 84879988148