2016ApJ...819..121P -
Astrophys. J., 819, 121 (2016/March-2)
Broadband observations of the gamma-ray emitting narrow line Seyfert 1 galaxy SBS 0846+513.
PALIYA V.S., RAJPUT B., STALIN C.S. and PANDEY S.B.
Abstract (from CDS):
We present the results of our broadband study of the γ-ray emitting narrow line Seyfert 1 (NLSy1) galaxy SBS 0846+513 (z = 0.585). This includes multiband flux variations, γ-ray spectral analysis, broadband spectral energy distribution (SED) modeling, and intranight optical variability (INOV) observations carried out over six nights between 2012 November and 2013 March using the 2 m Himalayan Chandra Telescope and the 1.3 m telescope at Devasthal, India. Multiple episodes of flaring activity are seen in the γ-ray light curve of the source which are also reflected in the observations at lower frequencies. A statistically significant curvature is noticed in the seven years averaged γ-ray spectrum, thus indicating its similarity with powerful flat spectrum radio quasars (FSRQs). Modeling the SEDs with a one-zone leptonic emission model hints that the optical UV spectrum is dominated by synchrotron radiation, whereas inverse Compton scattering of broad line region photons reproduces the γ-ray part of the SEDs. The source was found to be variable on all the six nights of optical observations with a variation of ∼0.3 mag within a single night, coinciding with a high γ-ray activity state. The observed large amplitude INOV clearly indicates the presence of a closely aligned beamed relativistic jet in SBS 0846+513. Our broadband study supports the recent claims in literature that γ-ray emitting NLSy1 galaxies are similar to blazars and constitute the low black hole mass counterparts to FSRQs.
Abstract Copyright:
∼
Journal keyword(s):
galaxies: active - galaxies: individual: SBS 0846+513 - galaxies: Seyfert - gamma rays: general
CDS comments:
Comparison stars in Table 1 are not in SIMBAD.
Simbad objects:
4
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2016ApJ...819..121P and select 'bookmark this link' or equivalent in the popup menu