A narrow line Seyfert 1--blazar composite nucleus in 2MASX J0324+3410

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dc.creatorZhou, Hongyan
dc.creatorWang, Tinggui
dc.creatorYuan, Weimin
dc.creatorShan, Hongguang
dc.creatorKomossa, Stefanie
dc.creatorLu, Honglin
dc.creatorLiu, Yi
dc.creatorXu, Dawei
dc.creatorBai, J. M.
dc.creatorJiang, D. R.
dc.date2007-02-13
dc.date.accessioned2026-07-07T12:31:17Z
dc.date.available2026-07-07T12:31:17Z
dc.descriptionWe report the identification of 2MASX J032441.19+341045.9 (hereafter 2MASX J0324+3410) with an appealing object which shows the dual properties of both a narrow line Seyfert 1 galaxy (NLS1) and a blazar. Its optical spectrum, which has a Hβline width about 1600 km s^-1 (FWHM), an [OIII] to Hβline ratio ~0.12, and strong FeII emission, clearly fulfills the conventional definition of NLS1s. On the other hand, 2MASX J0324+3410 also exhibits some behavior which is characteristic of blazars, including a flat radio spectrum above 1 GHz, a compact core plus a one-sided jet structure on mas-scale at 8.4 GHz, highly variable fluxes in the radio, optical, and X-ray bands, and a possible detection of TeV gamma-ray emission. On its optical image, obtained with the HST WFPC2, the active nucleus is displaced from the center of the host galaxy, which exhibits an apparent one-armed spiral structure extended to 16 kpc. The remarkable hybrid behavior of this object presents a challenge to current models of NLS1 galaxies and $γ$-ray blazars.
dc.description12 pages, 2 figures. Accepted to ApJL
dc.identifierhttps://arxiv.org/abs/astro-ph/0702329
dc.identifierhttp://arxiv.org/abs/astro-ph/0702329
dc.identifierAstrophys.J.658:L13-L16,2007
dc.identifierdoi:10.1086/513604
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216396
dc.subjectAstrophysics
dc.titleA narrow line Seyfert 1--blazar composite nucleus in 2MASX J0324+3410
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