Skip to content

Research at St Andrews

Continuum reverberation mapping of AGN accretion disks

Research output: Contribution to journalArticle

DOI

Open Access permissions

Open

Author(s)

Michael M. Fausnaugh, Bradley M. Peterson, David Starkey, Keith Horne, and the AGN STORM Collaboration

School/Research organisations

Abstract

We show recent detections of inter-band continuum lags in three AGN (NGC 5548, NGC 2617, and MCG+08-11-011), which provide new constraints on the temperature profiles and absolute sizes of the accretion disks. We find lags larger than would be predicted for standard geometrically thin, optically thick accretion disks by factors of 2.3–3.3. For NGC 5548, the data span UV through optical/near-IR wavelengths, and we are able to discern a steeper temperature profile than the T ~ R−3/4 expected for a standard thin disk. Using a physical model, we are also able to estimate the inclinations of the disks for two objects. These results are similar to those found from gravitational microlensing of strongly lensed quasars, and provide a complementary approach for investigating the accretion disk structure in local, low luminosity AGN.
Close

Details

Original languageEnglish
Article number55
Number of pages6
JournalFrontiers in Astronomy and Space Sciences
Volume4
DOIs
StatePublished - 5 Dec 2017

    Research areas

  • AGN continuum, Galaxies: active, Individual: NGC5548, NGC2617, MCG+08-11-011

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. The Sloan Digital Sky Survey Reverberation Mapping Project: Hα and Hβ reverberation measurements from first-year spectroscopy and photometry

    Grier, C. J. , Trump, J. R. , Shen, Y. , Horne, K. , Kinemuchi, K. , McGreer, I. D. , Starkey, D. A. , Brandt, W. N. , Hall, P. B. , Kochanek, C. S. , Chen, Y. , Denney, K. D. , Greene, J. E. , Ho, L. C. , Homayouni, Y. , Li, J. I-H. , Pei, L. , Peterson, B. M. , Petitjean, P. , Schneider, D. P. & 22 others Sun, M., AlSayyad, Y., Bizyaev, D., Brinkmann, J., Brownstein, J. R., Bundy, K., Dawson, K. S., Eftekharzadeh, S., Fernandez-Trincado, J. G., Gao, Y., Hutchinson, T. A., Jia, S., Jiang, L., Oravetz, D., Pan, K., Paris, I., Ponder, K. A., Peters, C., Rogerson, J., Simmons, A., Smith, R. & Wang, R. 6 Nov 2017 In : Astrophysical Journal.

    Research output: Contribution to journalArticle

  2. RoboTAP - target priorities for robotic microlensing observations

    Hundertmark, M. , Street, R. A. , Tsapras, Y. , Bachelet, E. , Dominik, M. , Horne, K. , Bozza, V. , Bramich, D. M. , Cassan, A. , D'Ago, G. , Jaimes, R. F. , Kains, N. , Ranc, C. , Schmidt, R. W. , Snodgrass, C. , Wambsganss, J. , Steele, I. A. , Mao, S. , Ment, K. , Menzies, J. & 4 others Li, Z., Cross, S., Maoz, D. & Shvartzvald, Y. 28 Sep 2017 In : Astronomy & Astrophysics.

    Research output: Contribution to journalArticle

  3. The Sloan Digital Sky Survey Reverberation Mapping project: composite lags at z ≤ 1

    Li, J., Shen, Y., Horne, K., Brandt, W. N., Greene, J. E., Grier, C. J., Ho, L. C., Kochanek, C., Schneider, D. P., Trump, J. R., Dawson, K. S., Pan, K., Bizyaev, D., Oravetz, D., Simmons, A. & Malanushenko, E. 1 Sep 2017 In : Astrophysical Journal. 846, 1, 12 p., 79

    Research output: Contribution to journalArticle

  4. Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the ultraviolet anomaly in NGC 5548 with X-ray spectroscopy

    Mathur, S. , Gupta, A. , Page, K. , Pogge, R. W. , Krongold, Y. , Goad, M. R. , Adams, S. M. , Anderson, M. D. , Arévalo, P. , Barth, A. J. , Bazhaw, C. , Beatty, T. G. , Bentz, M. C. , Bigley, A. , Bisogni, S. , Borman, G. A. , Boroson, T. A. , Bottorff, M. C. , Brandt, W. N. , Breeveld, A. A. & 130 others Brown, J. E., Brown, J. S., Cackett, E. M., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Coker, C. T., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Bontà, E. D., Deason, A. J., Denney, K. D., Lorenzo-Caceres, A. D., Rosa, G. D., Dietrich, M., Edelson, R., Ely, J., Eracleous, M., Evans, P. A., Fausnaugh, M. M., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gorjian, V., Greene, J. E., Grier, C. J., Grupe, D., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Horenstein, D., Horne, K., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Kochanek, C. S., Korista, K. T., Kriss, G. A., Lau, M. W., Lee, J. C., Leonard, D. C., Li, M., Lira, P., Ma, Z., MacInnis, F., Manne-Nicholas, E. R., Malkan, M. A., Mauerhan, J. C., McGurk, R., McHardy, I. M., Montouri, C., Morelli, L., Mosquera, A., Mudd, D., Muller-Sanchez, F., Musso, R., Nazarov, S. V., Netzer, H., Nguyen, M. L., Norris, R. P., Nousek, J. A., Ochner, P., Okhmat, D. N., Ou-Yang, B., Pancoast, A., Papadakis, I., Parks, J. R., Pei, L., Peterson, B. M., Pizzella, A., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Tejos, N., Turner, C. S., Uttley, P., Saders, J. V., Vestergaard, M., Vican, L., Villanueva Jr, S., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W. & Zu, Y. 1 Sep 2017 In : Astrophysical Journal. 846, 1, 9 p., 55

    Research output: Contribution to journalArticle

  5. Ground-based parallax confirmed by Spitzer. Binary microlensing event MOA-2015-BLG-020

    Wang, T. , Zhu, W. , Mao, S. , Bond, I. A. , Gould, A. , Udalski, A. , Sumi, T. , Bozza, V. , Ranc, C. , Cassan, A. , Yee, J. C. , Han, C. , Abe, F. , Asakura, Y. , Barry, R. , Bennett, D. P. , Bhattacharya, A. , Donachie, M. , Evans, P. , Fukui, A. & 66 others Hirao, Y., Itow, Y., Kawasaki, K., Koshimoto, N., Li, M. C. A., Ling, C. H., Masuda, K., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ohnishi, K., Rattenbury, N., Saito, T., Sharan, A., Shibai, H., Sullivan, D. J., Suzuki, D., Tristram, P. J., Yamada, T., Yonehara, A., KozŁowski, S., Mroz, P., Pawlak, M., Pietrukowicz, P., Poleski, R., Skowron, J., Soszyński, I., Szymanski, M. K., Ulaczyk, K., Beichman, C., Bryden, G., Novati, S. C., Carey, S., Fausnaugh, M., Gaudi, B. S., Henderson, C. B., Shvartzvald, Y., Wibking, B., Albrow, M. D., Chung, S. -J., Hwang, K. -H., Jung, Y. K., Ryu, Y. -H., Shin, I. -G., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Yee, Y., Park, B. -G., Pogge, R. W., Street, R. A., Tsapras, Y., Hundertmark, M., Bachelet, E., Dominik, M., Horne, K., Jaimes, R. F., Wambsganss, J., Bramich, D. M., Schmidt, R., Snodgrass, C., Steele, I. A. & Menzies, J. 20 Aug 2017 In : Astrophysical Journal. 845, 2, 11 p., 129

    Research output: Contribution to journalArticle

Related by journal

  1. Forward modeling of EUV and gyrosynchrotron emission from coronal plasmas with FoMo

    Van Doorsselaere, T., Antolin, P., Yuan, D., Reznikova, V. & Magyar, N. 26 Feb 2016 In : Frontiers in Astronomy and Space Sciences. 3, 9 p., 4

    Research output: Contribution to journalArticle

ID: 251699234