MULTIWAVELENGTH MONITORING OF THE ENIGMATIC NARROW-LINE SEYFERT 1 PMN J0948+0022 IN 2009 MARCH-JULY
文献类型：期刊论文
| 作者 | Abdo, A. A.2,86; Ackermann, M.3,4; Ajello, M.3,4; Axelsson, M.5,6; Baldini, L.7; Ballet, J.8; Barbiellini, G.9,10; Bastieri, D.11,12; Baughman, B. M.13; Bechtol, K.3,4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2009-12-10 |
| 卷号 | 707期号:1页码:727-737 |
| 关键词 | galaxies: active gamma rays: observations infrared: galaxies quasars: individual (PMN J0948+0022) radio continuum: galaxies ultraviolet: galaxies X-rays: galaxies |
| 英文摘要 | Following the recent discovery of gamma rays from the radio-loud narrow-line Seyfert 1 galaxy PMN J0948+0022 (z = 0.5846), we started a multiwavelength campaign from radio to gamma rays, which was carried out between the end of 2009 March and the beginning of July. The source displayed activity at all the observed wavelengths: a general decreasing trend from optical to gamma-ray frequencies was followed by an increase of radio emission after less than two months from the peak of the gamma-ray emission. The largest flux change, about a factor of about 4, occurred in the X-ray band. The smallest was at ultraviolet and near-infrared frequencies, where the rate of the detected photons dropped by a factor 1.6-1.9. At optical wavelengths, where the sampling rate was the highest, it was possible to observe day scale variability, with flux variations up to a factor of about 3. The behavior of PMN J0948+0022 observed in this campaign and the calculated power carried out by its jet in the form of protons, electrons, radiation, and magnetic field are quite similar to that of blazars, specifically of flat-spectrum radio quasars. These results confirm the idea that radio-loud narrow-line Seyfert 1 galaxies host relativistic jets with power similar to that of average blazars. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; GAMMA-RAY EMISSION ; RADIO ; GALAXIES ; JETS ; VARIABILITY ; CALIBRATION ; RADIATION ; MISSION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000272162900059 |
| 源URL | [http://119.78.226.72/handle/331011/19560]  |
| 专题 | 上海天文台_VLBI研究室 |
| 作者单位 | 1.Osserv Astron Brera, INAF, I-23807 Merate, Italy 2.Natl Acad Sci, Natl Res Council, Washington, DC 20001 USA 3.Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA 4.Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA 5.Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden 6.Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden 7.Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy 8.Univ Paris Diderot, Lab AIM, CEA IRFU CNRS, Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France 9.Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy 10.Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy |
| 推荐引用方式 GB/T 7714 | Abdo, A. A.,Ackermann, M.,Ajello, M.,et al. MULTIWAVELENGTH MONITORING OF THE ENIGMATIC NARROW-LINE SEYFERT 1 PMN J0948+0022 IN 2009 MARCH-JULY[J]. ASTROPHYSICAL JOURNAL,2009,707(1):727-737. |
| APA | Abdo, A. A..,Ackermann, M..,Ajello, M..,Axelsson, M..,Baldini, L..,...&Fermi LAT Collaboration.(2009).MULTIWAVELENGTH MONITORING OF THE ENIGMATIC NARROW-LINE SEYFERT 1 PMN J0948+0022 IN 2009 MARCH-JULY.ASTROPHYSICAL JOURNAL,707(1),727-737. |
| MLA | Abdo, A. A.,et al."MULTIWAVELENGTH MONITORING OF THE ENIGMATIC NARROW-LINE SEYFERT 1 PMN J0948+0022 IN 2009 MARCH-JULY".ASTROPHYSICAL JOURNAL 707.1(2009):727-737. |
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来源：上海天文台
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