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Discovery and follo...
Discovery and follow-up of the unusual nuclear transient OGLE17aaj
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Gromadzki, M. (author)
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Hamanowicz, A. (author)
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Wyrzykowski, L. (author)
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Sokolovsky, K. V. (author)
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Fraser, M. (author)
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Kozłowski, Sz. (author)
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Guillochon, J. (author)
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Arcavi, I. (author)
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Trakhtenbrot, B. (author)
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Jonker, P. G. (author)
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Mattila, S. (author)
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Udalski, A. (author)
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Szymański, M. K. (author)
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Soszyński, I. (author)
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Poleski, R. (author)
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Pietrukowicz, P. (author)
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Skowron, J. (author)
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Mróz, P. (author)
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Ulaczyk, K. (author)
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Pawlak, M. (author)
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Rybicki, K. A. (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Kostrzewa-Rutkowska, Z. (author)
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Onori, F. (author)
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Young, D. R. (author)
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Maguire, K. (author)
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Smartt, S. J. (author)
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Inserra, C. (author)
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Gal-Yam, A. (author)
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Rau, A. (author)
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Chen, T. -W. (author)
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Angus, C. R. (author)
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Buckley, D. A. H. (author)
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(creator_code:org_t)
- 2019-01-24
- 2019
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 622
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Aims. We report on the discovery and follow-up of a peculiar transient, OGLE17aaj, which occurred in the nucleus of a weakly active galaxy. We investigate whether it can be interpreted as a new candidate for a tidal disruption event (TDE).Methods. We present the OGLE-IV light curve that covers the slow 60-day-long rise to maximum along with photometric, spectro-scopic, and X-ray follow-up during the first year.Results. OGLE17aaj is a nuclear transient exhibiting some properties similar to previously found TDEs, including a long rise time, lack of colour-temperature evolution, and high black-body temperature. On the other hand, its narrow emission lines and slow post-peak evolution are different from previously observed TDEs. Its spectrum and light-curve evolution is similar to F01004-2237 and AT 2017bgt. Signatures of historical low-level nuclear variability suggest that OGLE17aaj may instead be related to a new type of accretion event in active super-massive black holes.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- black hole physics
- Galaxy: nucleus
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Gromadzki, M.
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Hamanowicz, A.
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Wyrzykowski, L.
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Sokolovsky, K. V ...
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Fraser, M.
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Kozłowski, Sz.
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show more...
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Guillochon, J.
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Arcavi, I.
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Trakhtenbrot, B.
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Jonker, P. G.
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Mattila, S.
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Udalski, A.
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Szymański, M. K.
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Soszyński, I.
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Poleski, R.
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Pietrukowicz, P.
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Skowron, J.
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Mróz, P.
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Ulaczyk, K.
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Pawlak, M.
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Rybicki, K. A.
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Sollerman, Jespe ...
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Taddia, Francesc ...
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Kostrzewa-Rutkow ...
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Onori, F.
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Young, D. R.
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Maguire, K.
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Smartt, S. J.
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Inserra, C.
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Gal-Yam, A.
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Rau, A.
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Chen, T. -W.
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Angus, C. R.
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Buckley, D. A. H ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Astronomy and As ...
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Stockholm University