The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.
Reverberation Mapping of High‐Luminosity Quasars: First Results
Open accessAbstract
Reverberation mapping of nearby active galactic nuclei (AGNs) has led to estimates of broad-line region (BLR) sizes and central object masses for some 37 objects to date. However, successful reverberation mapping has yet to be performed for quasars of either high luminosity (above L opt ~ 10 46 ergs s -1 ) or high redshift ( z ≳ 0.3). Over the past 6 years, we have carried out, at the Hobby-Eberly Telescope, rest-frame ultraviolet spectrophotometric monitoring of a sample of six quasars at redshifts z = 2.2-3.2, with luminosities of L opt ~ 10 46.4 -10 47.6 ergs s -1 , an order of magnitude greater than those of previously mapped quasars. The six quasars, together with an additional five having similar redshift and luminosity properties, were monitored photometrically at the Wise Observatory during the past decade. All 11 quasars monitored show significant continuum variations of order 10%-70%. This is about a factor of 2 smaller variability than for lower luminosity quasars monitored over the same rest-frame period. In the six objects that have been spectrophotometrically monitored, significant variability is detected in the C IV λ1550 broad emission line. In several cases the variations track the continuum variations in the same quasar, with amplitudes comparable to, or even greater than, those of the corresponding continua. In contrast, no significant Lyα variability is detected in any of the four objects in which it was observed. Thus, UV lines may have different variability trends in high-luminosity and low-luminosity AGNs. For one quasar, S5 0836+71 at z = 2.172, we measure a tentative delay of 595 days between C IV and UV continuum variations, corresponding to a rest-frame delay of 188 days and a central black hole mass of 2.6 × 10 9 M ☉ .
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Cites
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The relationship between infrared, optical, and ultraviolet extinction
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MethodThe Slope of the Black Hole Mass versus Velocity Dispersion Correlation
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Self-citationLocal supermassive black holes, relics of active galactic nuclei and the X-ray background
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Cited by
LSST: From Science Drivers to Reference Design and Anticipated Data Products
Ivezić, Ž., Kahn, S. M., Tyson, J. A., Abel, B., Acosta, E., Allsman, R., Alonso, D., AlSayyad, Y., Anderson, S. F., Andrew, J., et al. (2019) · The Astrophysical Journal · doi:10.3847/1538-4357/ab042c · Cited by 4,357
“Observations over a decade would enable the study of long period variables and quasars (Kaspi et al. 2007; MacLeod et al. 2010; Graham et al. 2014).”
BackgroundSelf-citationThe AGN Black Hole Mass Database
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COMPARING SINGLE-EPOCH VIRIAL BLACK HOLE MASS ESTIMATORS FOR LUMINOUS QUASARS
Shen, Y., & Liu, X. (2012) · The Astrophysical Journal · doi:10.1088/0004-637x/753/2/125 · Cited by 279
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., et al. (2017) · The Astrophysical Journal · doi:10.3847/1538-4357/aa98dc · Cited by 244
Self-citationTHE SLOAN DIGITAL SKY SURVEY REVERBERATION MAPPING PROJECT: TECHNICAL OVERVIEW
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Self-citation
Metadata
- Authors
- Kaspi, S., Brandt, W. N., Maoz, D., Netzer, H., Schneider, D. P., & Shemmer, O.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2007-04-20
- Volume
- 659
- Issue
- 2
- Pages
- 997-1007
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2072944399
- Cited by
- 440
- References
- 42
- FWCI
- 15.50
- Type
- journal article
- Language
- en
- Open access
- bronze
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