A γ-ray-emitting NLS1 galaxy, SDSS J095909.51+460014.3, identified by multi-wavelength contemporaneous brightening

被引：2

作者：

Li, Yang-Ji ^{[1
]}

Liao, Neng-Hui ^{[1
]}

Sheng, Zhen-feng ^{[2
,4
]}

Chen, Sina ^{[6
]}

Wang, Yi-Bo ^{[3
,4
,5
]}

Wang, Ting-Gui ^{[3
,4
,5
]}

机构：

[1] Guizhou Univ, Coll Phys, Dept Phys & Astron, Guiyang 550025, Peoples R China

[2] Inst Deep Space Sci, Deep Space Explorat Lab, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Dept Astron, Deep Space Explorat Lab, Hefei 230026, Peoples R China

[4] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China

[5] Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China

[6] Technion Israel Inst Technol, Dept Phys, IL-3200003 Haifa, Israel

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 676卷

基金：

美国国家航空航天局; 中国博士后科学基金; 以色列科学基金会;

关键词：

galaxies; active; jets; LINE SEYFERT 1; ACTIVE GALACTIC NUCLEI; LARGE-AREA TELESCOPE; BLACK-HOLE MASSES; GAMMA-RAY BLAZAR; HIGH-ENERGY EMISSION; RADIO-LOUD; RELATIVISTIC JET; DATA RELEASE; MIDINFRARED VARIABILITY;

D O I：

10.1051/0004-6361/202245599

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the identification of a new & gamma;-ray-emitting narrow-line Seyfert 1 galaxy (& gamma;-NLS1), SDSS J095909.51+460014.3 (z = 0.399), by establishing an association with a & gamma;-ray source 4FGL 0959.6+4606, although its low-energy counterpart was suggested to be a radio galaxy (RG) 2MASX J09591976+4603515. Wide-field Infrared Survey Explorer long-term light curves of these two sources reveal diverse infrared variability patterns. Brightenings of 2.5 mag are detected for the former source, while flux decays of 0.5 mag are found for the other one. More importantly, the time that the infrared flux of the NLS1 rises is coincident with the time of flux increase of 4FGL 0959.6+4606. At the same time, no infrared activity of the RG has been observed. A specific analysis of 15-month data from Large Area Telescope aboard Fermi, aimed at the high & gamma;-ray flux state, yields a significant source (TS = 43). The corresponding & gamma;-ray localisation analysis suggests that only the NLS1 falls into the uncertainty area, further supporting the updated association relationship. A broadband spectral energy distribution of SDSS J095909.51+460014.3 has been drawn and well described by the classic single-zone homogeneous leptonic jet model. Its jet properties were investigated and found to be comparable with the known & gamma;-NLS1s.

引用

页数：9