The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
THE MAN BEHIND THE CURTAIN: X-RAYS DRIVE THE UV THROUGH NIR VARIABILITY IN THE 2013 ACTIVE GALACTIC NUCLEUS OUTBURST IN NGC 2617
Open accessAbstract
After the All-Sky Automated Survey for SuperNovae discovered a significant brightening of the inner region of NGC 2617, we began a ∼70 day photometric and spectroscopic monitoring campaign from the X-ray through near-infrared (NIR) wavelengths. We report that NGC 2617 went through a dramatic outburst, during which its X-ray flux increased by over an order of magnitude followed by an increase of its optical/ultraviolet (UV) continuum flux by almost an order of magnitude. NGC 2617, classified as a Seyfert 1.8 galaxy in 2003, is now a Seyfert 1 due to the appearance of broad optical emission lines and a continuum blue bump. Such "changing look active galactic nuclei (AGNs)" are rare and provide us with important insights about AGN physics. Based on the Hβ line width and the radius–luminosity relation, we estimate the mass of central black hole (BH) to be (4 ± 1) × 10 7 M ☉ . When we cross-correlate the light curves, we find that the disk emission lags the X-rays, with the lag becoming longer as we move from the UV (2–3 days) to the NIR (6–9 days). Also, the NIR is more heavily temporally smoothed than the UV. This can largely be explained by a simple model of a thermally emitting thin disk around a BH of the estimated mass that is illuminated by the observed, variable X-ray fluxes.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
The Two Micron All Sky Survey (2MASS)
Skrutskie, M. F., Cutri, R. M., Stiening, R., Weinberg, M. D., Schneider, S., Carpenter, J. M., Beichman, C., Capps, R., Chester, T., Elias, J., et al. (2006) · The Astronomical Journal · doi:10.1086/498708 · Cited by 12,019
Cited by
LaMassa, S. M., Cales, S., Moran, E. C., Myers, A. D., Richards, G. T., Eracleous, M., Heckman, T. M., Gallo, L., & Urry, C. M. (2015) · The Astrophysical Journal · doi:10.1088/0004-637x/800/2/144 · Cited by 451
The Zwicky Transient Facility: Surveys and Scheduler
Bellm, E. C., Kulkarni, S. R., Barlow, T., Feindt, U., Graham, M. J., Goobar, A., Kupfer, T., Ngeow, C.-C., Nugent, P., Ofek, E., et al. (2019) · Publications of the Astronomical Society of the Pacific · doi:10.1088/1538-3873/ab0c2a · Cited by 367
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
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-citationHow Many Kilonovae Can Be Found in Past, Present, and Future Survey Data Sets?
Scolnic, D., Kessler, R., Brout, D., Cowperthwaite, P. S., Soares-Santos, M., Annis, J., Herner, K., Chen, H.-Y., Sako, M., Doctor, Z., et al. (2018) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/aa9d82 · Cited by 78
Metadata
- Authors
- Shappee, B. J., Prieto, J. L., Grupe, D., Kochanek, C. S., Stanek, K. Z., De Rosa, G., Mathur, S., Zu, Y., Peterson, B. M., Pogge, R. W., Komossa, S., Im, M., Jencson, J., Holoien, T. W.-S., Basu, U., Beacom, J. F., Szczygieł, D. M., Brimacombe, J., Adams, S., Campillay, A., Choi, C., Contreras, C., Dietrich, M., Dubberley, M., Elphick, M., Foale, S., Giustini, M., Gonzalez, C., Hawkins, E., Howell, D. A., Hsiao, E. Y., Koss, M., Leighly, K. M., Morrell, N., Mudd, D., Mullins, D., Nugent, J. M., Parrent, J., Phillips, M. M., Pojmanski, G., Rosing, W., Ross, R., Sand, D., Terndrup, D. M., Valenti, S., Walker, Z., & Yoon, Y.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2014-05-21
- Volume
- 788
- Issue
- 1
- Pages
- 48
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2950529756
- Cited by
- 1,887
- References
- 1
- FWCI
- 39.10
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: THE MAN BEHIND THE CURTAIN: X-RAYS DRIVE THE UV THROUGH NIR VARIABILITY IN THE 2013 ACTIVE GALACTIC NUCLEUS OUTBURST IN NGC 2617. https://app.cochat.ai/papers/10.1088/0004-637x/788/1/48
- The paper
- Shappee, B. J., Prieto, J. L., Grupe, D., Kochanek, C. S., Stanek, K. Z., De Rosa, G., Mathur, S., Zu, Y., Peterson, B. M., Pogge, R. W., Komossa, S., Im, M., Jencson, J., Holoien, T. W.-S., Basu, U., Beacom, J. F., Szczygieł, D. M., Brimacombe, J., Adams, S., . . . Yoon, Y. (2014). THE MAN BEHIND THE CURTAIN: X-RAYS DRIVE THE UV THROUGH NIR VARIABILITY IN THE 2013 ACTIVE GALACTIC NUCLEUS OUTBURST IN NGC 2617. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/788/1/48
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
