The radio structure of the peculiar narrow-line Seyfert 1 galaxy candidate J1100+4421

K. Gabányi, S. Frey, Z. Paragi, E. Järvelä, T. Morokuma, T. An, M. Tanaka, I. Tar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Narrow-line Seyfert 1 galaxies (NLS1) are an intriguing subclass of active galactic nuclei. Their observed properties indicate low central black hole mass and high accretion rate. The extremely radio-loud NLS1 sources often show relativistic beaming and are usually regarded as younger counterparts of blazars. Recently, the object SDSS J110006.07+442144.3 was reported as a candidate NLS1 source. The characteristics of its dramatic optical flare indicated its jet-related origin. The spectral energy distribution of the object was similar to that of the γ -ray detected radio-loud NLS1, PMNJ0948+0022. Our high-resolution European very long baseline interferometry network observations at 1.7 and 5 GHz revealed a compact core feature with a brightness temperature of ≳1010 K. Using the lowest brightness temperature value and assuming a moderate Lorentz factor of ~9, the jet viewing angle is ≲26°. Archival Very Large Array data show a large-scale radio structure with a projected linear size of ~150 kpc reminiscent of double-sided morphology.

Original languageEnglish
Pages (from-to)1554-1561
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume473
Issue number2
DOIs
Publication statusPublished - 2018 Jan
Externally publishedYes

Keywords

  • Galaxies: Seyfert
  • Galaxies: active
  • Galaxies: individual: SDSS J110006.07+442144.3

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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