SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. VI. REVERBERATING DISK MODELS FOR NGC 5548

被引：63

作者：

Starkey, D. ^{[1
]}

Horne, Keith ^{[1
]}

Fausnaugh, M. M. ^{[2
]}

Peterson, B. M. ^{[2
,3
,4
]}

Bentz, M. C. ^{[5
]}

Kochanek, C. S. ^{[2
,3
]}

Denney, K. D. ^{[2
,3
]}

Edelson, R. ^{[6
]}

Goad, M. R. ^{[7
]}

De Rosa, G. ^{[2
,3
,4
]}

Anderson, M. D. ^{[5
]}

Arevalo, P. ^{[8
]}

Barth, A. J. ^{[9
]}

Bazhaw, C. ^{[5
]}

Borman, G. A. ^{[10
]}

Boroson, T. A. ^{[11
]}

Bottorff, M. C. ^{[12
]}

Brandt, W. N. ^{[13
,14
,15
]}

Breeveld, A. A. ^{[16
]}

Cackett, E. M. ^{[17
]}

Carini, M. T. ^{[18
]}

Croxall, K. V. ^{[2
,3
]}

Crenshaw, D. M. ^{[5
]}

Dalla Bonta, E. ^{[19
,20
]}

De Lorenzo-Caceres, A. ^{[1
]}

Dietrich, M. ^{[21
,22
]}

Efimova, N. V. ^{[23
]}

Ely, J. ^{[4
]}

Evans, P. A. ^{[7
]}

Filippenko, A. V. ^{[24
]}

Flatland, K. ^{[25
]}

Gehrels, N. ^{[26
]}

Geier, S. ^{[27
,28
,29
]}

Gelbord, J. M. ^{[30
,31
]}

Gonzalez, L. ^{[25
]}

Gorjian, V. ^{[32
]}

Grier, C. J. ^{[2
,13
,14
]}

Grupe, D. ^{[33
]}

Hall, P. B. ^{[34
]}

Hicks, S. ^{[18
]}

Horenstein, D. ^{[5
]}

Hutchison, T. ^{[12
]}

Im, M. ^{[35
]}

Jensen, J. J. ^{[36
]}

Joner, M. D. ^{[37
]}

Jones, J. ^{[5
]}

Kaastra, J. ^{[38
,39
,40
]}

Kaspi, S. ^{[41
,42
]}

Kelly, B. C. ^{[43
]}

Kennea, J. A. ^{[11
]}

机构：

[1] Univ St Andrews, SUPA Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA

[3] Ohio State Univ, Ctr Cosmol & AstroParticle Phys, 191 West Woodruff Ave, Columbus, OH 43210 USA

[4] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[5] Georgia State Univ, Dept Phys & Astron, 25 Pk Pl,Suite 605, Atlanta, GA 30303 USA

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

[7] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

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

[9] Univ Calif Irvine, Dept Phys & Astron, 4129 Frederick Reines Hall, Irvine, CA 92697 USA

[10] Crimean Astrophys Observ, Crimea 298409, Russia

[11] Las Cumbres Global Telescope Network, 6740 Cortona Dr,Suite 102, Santa Barbara, CA 93117 USA

[12] Southwestern Univ, Dept Phys FJS 149, Fountainwood Observ, 1011 E Univ Ave, Georgetown, TX 78626 USA

[13] Penn State Univ, Eberly Coll Sci, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA

[14] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[15] Penn State Univ, Dept Phys, Davey Lab 104, University Pk, PA 16802 USA

[16] Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

[17] Wayne State Univ, Dept Phys & Astron, 666 W Hancock St, Detroit, MI 48201 USA

[18] Western Kentucky Univ, Dept Phys & Astron, 1906 Coll Hts Blvd 11077, Bowling Green, KY 42101 USA

[19] Univ Padua, Dipartimento Fis & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy

[20] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[21] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[22] Worcester State Univ, Dept Earth Environm & Phys, 486 Chandler St, Worcester, MA 01602 USA

[23] Pulkovo Observ, St Petersburg 196140, Russia

[24] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[25] San Diego State Univ, Dept Astron, San Diego, CA 92182 USA

[26] NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[27] Inst Astrofis Canarias, Tenerife 38200, Spain

[28] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain

[29] Gran Telescopio Canarias GRANTECAN, Tenerife 38205, Spain

[30] Spectral Sci Inc, 4 Fourth Ave, Burlington, MA 01803 USA

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

[32] CALTECH, Jet Prop Lab, MS 169-327,4800 Oak Grove Dr, Pasadena, CA 91109 USA

[33] Morehead State Univ, Ctr Space Sci, 235 Martindale Dr, Morehead, KY 40351 USA

[34] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada

[35] Seoul Natl Univ, Dept Phys & Astron, Astron Program, Seoul, South Korea

[36] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark

[37] Brigham Young Univ, Dept Phys & Astron, N283 ESC, Provo, UT 84602 USA

[38] SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands

[39] Univ Utrecht, Dept Phys & Astron, POB 80000, NL-3508 Utrecht, Netherlands

[40] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[41] Tel Aviv Univ, Sch Phys & Astron, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel

[42] Technion, Dept Phys, IL-32000 Haifa, Israel

[43] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[44] Korea Astron & Space Sci Inst, Daejeon, South Korea

[45] Western Michigan Univ, Dept Phys, 1120 Everett Tower, Kalamazoo, MI 49008 USA

[46] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[47] Univ Chile, Dept Astron, Camino Observ 1515, Santiago, Chile

[48] Univ Southampton, Southampton SO17 1BJ, Hants, England

[49] Univ Insubria, DiSAT, Via Valleggio 11, I-22100 Como, Italy

[50] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL | 2017年 / 835卷 / 01期

基金：

美国国家科学基金会; 新加坡国家研究基金会; 加拿大自然科学与工程研究理事会; 英国科学技术设施理事会;

关键词：

accretion; accretion disks; galaxies: active; galaxies: individual (NGC 5548); galaxies: nuclei; galaxies: Seyfert; ACTIVE GALACTIC NUCLEI; SUPERMASSIVE BLACK-HOLE; QUASAR ACCRETION DISKS; BROAD-LINE REGION; X-RAY; CONTINUUM EMISSION; EMITTING REGIONS; VARIABILITY; SIZE; LAGS;

D O I：

10.3847/1538-4357/835/1/65

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion disk. The 19 overlapping continuum light curves (1158 angstrom to 9157 angstrom) combine simultaneous Hubble Space Telescope, Swift, and ground-based observations over a 180 day period from 2014 January to July. Light-curve variability is interpreted as the reverberation response of the accretion disk to irradiation by a central time-varying point source. Our model yields the disk inclination i = 36 degrees +/- 10 degrees, temperature T-1= (44 +/- 6) x 10(3) K at 1 light day from the black hole, and a temperature-radius slope (T proportional to r(-alpha)) of alpha = 0.99 +/- 0.03. We also infer the driving light curve and find that it correlates poorly with both the hard and soft X-ray light curves, suggesting that the X-rays alone may not drive the ultraviolet and optical variability over the observing period. We also decompose the light curves into bright, faint, and mean accretion-disk spectra. These spectra lie below that expected for a standard blackbody accretion disk accreting at L/L-Edd = 0.1.

引用

页数：15

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