The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.
SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II.SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548
Open accessAbstract
Recent intensive Swift monitoring of the Seyfert 1 galaxy NGC 5548 yielded 282 usable epochs over 125 days across six UV/optical bands and the X-rays. This is the densest extended active galactic nucleus (AGN) UV/optical continuum sampling ever obtained, with a mean sampling rate <0.5 day. Approximately daily Hubble Space Telescope UV sampling was also obtained. The UV/optical light curves show strong correlations ( ) and the clearest measurement to date of interband lags. These lags are well-fit by a wavelength dependence, with a normalization that indicates an unexpectedly large disk radius of lt-day at 1367 Å, assuming a simple face-on model. The U band shows a marginally larger lag than expected from the fit and surrounding bands, which could be due to Balmer continuum emission from the broad-line region as suggested by Korista and Goad. The UV/X-ray correlation is weaker ( ) and less consistent over time. This indicates that while Swift is beginning to measure UV/optical lags in general agreement with accretion disk theory (although the derived size is larger than predicted), the relationship with X-ray variability is less well understood. Combining this accretion disk size estimate with those from quasar microlensing studies suggests that AGN disk sizes scale approximately linearly with central black hole mass over a wide range of masses.
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Cites
The Swift Gamma‐Ray Burst Mission
Gehrels, N., Chincarini, G., Giommi, P., Mason, K. O., Nousek, J. A., Wells, A. A., White, N. E., Barthelmy, S. D., Burrows, D. N., Cominsky, L. R., et al. (2004) · The Astrophysical Journal · doi:10.1086/422091 · Cited by 4,154
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Self-citationPeterson, B. M., Ferrarese, L., Gilbert, K. M., Kaspi, S., Malkan, M. A., Maoz, D., Merritt, D., Netzer, H., Onken, C. A., Pogge, R. W., et al. (2004) · The Astrophysical Journal · doi:10.1086/423269 · Cited by 1,802
Self-citationMethods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
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Self-citationTHE LOW-LUMINOSITY END OF THE RADIUS-LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI
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Self-citationBentz, M. C., Peterson, B. M., Netzer, H., Pogge, R. W., & Vestergaard, M. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/697/1/160 · Cited by 608
Self-citationTHE SECOND-GENERATION GUIDE STAR CATALOG: DESCRIPTION AND PROPERTIES
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THE QUASAR ACCRETION DISK SIZE-BLACK HOLE MASS RELATION
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Self-citationREVERBERATION MAPPING MEASUREMENTS OF BLACK HOLE MASSES IN SIX LOCAL SEYFERT GALAXIES
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Active galactic nuclei: what’s in a name?
Padovani, P., Alexander, D. M., Assef, R. J., De Marco, B., Giommi, P., Hickox, R. C., Richards, G. T., Smolčić, V., Hatziminaoglou, E., Mainieri, V., et al. (2017) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-017-0102-9 · Cited by 666
A systematic search for changing-look quasars in SDSS
MacLeod, C. L., Ross, N. P., Lawrence, A., Goad, M., Horne, K., Burgett, W., Chambers, K. C., Flewelling, H., Hodapp, K., Kaiser, N., et al. (2016) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv2997 · Cited by 323
Self-citationFausnaugh, M. M., Denney, K. D., Barth, A. J., Bentz, M. C., Bottorff, M. C., Carini, M. T., Croxall, K. V., Rosa, G. D., Goad, M. R., Horne, K., et al. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/821/1/56 · Cited by 311
Self-citationGrier, 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., et al. (2017) · The Astrophysical Journal · doi:10.3847/1538-4357/aa98dc · Cited by 244
Self-citation
Metadata
- Authors
- Edelson, R., Gelbord, J. M., Horne, K., McHardy, I. M., Peterson, B. M., Arévalo, P., Breeveld, A. A., Rosa, G. D., Evans, P. A., Goad, M. R., Kriss, G. A., Brandt, W. N., Gehrels, N., Grupe, D., Kennea, J. A., Kochanek, C. S., Nousek, J. A., Papadakis, I., Siegel, M., Starkey, D., Uttley, P., Vaughan, S., Young, S., Barth, A. J., Bentz, M. C., Brewer, B. J., Crenshaw, D. M., Dalla Bontà, E., Cáceres, A. D. L., Denney, K. D., Dietrich, M., Ely, J., Fausnaugh, M. M., Grier, C. J., Hall, P. B., Kaastra, J., Kelly, B. C., Korista, K. T., Lira, P., Mathur, S., Netzer, H., Pancoast, A., Pei, L., Pogge, R. W., Schimoia, J. S., Treu, T., Vestergaard, M., Villforth, C., Yan, H., & Zu, Y.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2015-06-12
- Volume
- 806
- Issue
- 1
- Pages
- 129
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1873146751
- Cited by
- 302
- References
- 24
- FWCI
- 19.68
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II.SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548. https://app.cochat.ai/papers/10.1088/0004-637x/806/1/129
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- Edelson, R., Gelbord, J. M., Horne, K., McHardy, I. M., Peterson, B. M., Arévalo, P., Breeveld, A. A., Rosa, G. D., Evans, P. A., Goad, M. R., Kriss, G. A., Brandt, W. N., Gehrels, N., Grupe, D., Kennea, J. A., Kochanek, C. S., Nousek, J. A., Papadakis, I., Siegel, M., . . . Zu, Y. (2015). SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II.SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/806/1/129
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