BASS-XL: X-ray variability properties of unobscured active galactic nuclei

被引：10

作者：

Tortosa, Alessia ^{[1
,2
]}

Ricci, Claudio ^{[1
,3
,4
]}

Arevalo, Patricia ^{[5
]}

Koss, Michael J. ^{[6
]}

Bauer, Franz E. ^{[7
,8
,9
,10
]}

Trakhtenbrot, Benny ^{[11
]}

Mushotzky, Richard ^{[12
,13
]}

Temple, Matthew J. ^{[1
]}

Ricci, Federica ^{[2
,14
]}

Lilayu, Alejandra Rojas ^{[1
,15
]}

Kawamuro, Taiki ^{[16
]}

Caglar, Turgay ^{[17
]}

Liu, Tingting ^{[18
]}

Harrison, Fiona ^{[19
]}

Oh, Kyuseok ^{[20
,21
]}

Powell, Meredith Clark ^{[22
]}

Stern, Daniel ^{[23
]}

Urry, Claudia Megan ^{[24
,25
]}

机构：

[1] Univ Diego Port, Inst Estudios Astrofis, Fac Ingn Ciencias, Ave Ejercito Libertador 441, Santiago 8320000, Chile

[2] INAF Osservatorio Astronom Roma, Via Frascati 33, I-00078 Monte Porzio Catone, RM, Italy

[3] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[4] George Mason Univ, Dept Phys & Astron, MS 3F3,4400 Univ Dr, Fairfax, VA 22030 USA

[5] Univ Valparaiso, Inst Fis & Astron, Fac Ciencias, Gran Bretana N 1111, Valparaiso 2390418, Chile

[6] Eureka Sci, 2452 Delmer St Suite 100, Oakland, CA 94602 USA

[7] Pontificia Univ Catolica Chile, Inst Astrofis, Fac Fis, Campus San Joaquin,Ave Vicuna Mackenna, Santiago 7820436, Chile

[8] Pontificia Univ Catolica Chile, Ctr Astroingn, Fac Fis, Campus San Joaquin,Ave Vicuna Mackenna 4860, Santiago 7820436, Chile

[9] Millennium Inst Astrophys, Nuncio Monsenor Sotero Sanz 100 104, Santiago, Chile

[10] Space Sci Inst, 4750 Walnut St,Suite 205, Boulder, CO 80301 USA

[11] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[12] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[13] Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA

[14] Univ Roma Tre, Dipartimento Matemat & Fis, Via Vasca Navale 84, I-00146 Rome, Italy

[15] Univ Antofagasta, Centr Astron CITEVA, Ave Angamos 601, Antofagasta 1240000, Chile

[16] RIKEN Cluster Pioneering Res, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[17] Southern Methodist Univ, Dept Phys, 3215 Daniel Ave, Dallas, TX 75205 USA

[18] West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA

[19] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

[20] Korea Astron & Space Sci Inst, 776 Daedeokdae ro, Daejeon 34055, South Korea

[21] Kyoto Univ, Dept Astron, Kitashirakawa Oiwake cho,Sakyo Ku, Kyoto 6068502, Japan

[22] Stanford Univ sity, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA

[23] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr,MS 169-224, Pasadena, CA 91109 USA

[24] Yale Univ, Yale Ctr Astron & Astrophys, POB 208120, New Haven, CT 06520 USA

[25] Yale Univ, Dept Phys, POB 208120, New Haven, CT 06520 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 526卷 / 02期

基金：

以色列科学基金会; 欧洲研究理事会; 新加坡国家研究基金会;

关键词：

quasars: supermassive black hole; X-rays: galaxies; black hole physics; galaxies:nuclei; BLACK-HOLE MASS; PHOTON IMAGING CAMERA; DIGITAL SKY SURVEY; XMM-NEWTON; POWER-SPECTRUM; BAT AGN; NARROW-LINE; EXTREME VARIABILITY; EXCESS VARIANCE; 2-PHASE MODEL;

D O I：

10.1093/mnras/stad2775

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the X-ray variability properties of Seyfert 1 Galaxies belonging to the BAT AGN Spectroscopic Survey (BASS). The sample includes 151 unobscured (N-H < 10(22) cm(-2)) AGNs observed with XMM-Newton for a total exposure time of similar to 27 ms, representing the deepest variability study done so far with high signal-to-noise XMM-Newton observations, almost doubling the number of observations analysed in previous works. We constrain the relation between the normalized excess variance and the 2-10 keV AGN luminosities, black hole masses, and Eddington ratios. We find a highly significant correlation between sigma(2)(NXS) and M-BH, with a scatter of similar to 0.85 dex. For sources with high L2-10 this correlation has a lower normalization, confirming that more luminous (higher mass) AGNs show less variability. We explored the sigma(2)(NXS) versus M-BH relation for the sub-sample of sources with M-BH estimated via the 'reverberation mapping' technique, finding a tighter anticorrelation, with a scatter of similar to 0.65 dex. We examine how the sigma(2)(NXS) changes with energy by studying the relation between the variability in the hard (3-10 keV) and the soft (0.2-1 keV)/medium (1-3 keV) energy bands, finding that the spectral components dominating the hard energy band are more variable than the spectral components dominating in softer energy bands, on time-scales shorter than 10 ks.

引用

页码：1687 / 1698

页数：12

共 96 条

[1] Black hole mass estimation using X-ray variability measurements in Seyfert galaxies [J].