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CC-BY - Uznanie autorstwaDiscovery and follow-up of the unusual nuclear transient OGLE17aaj
| dc.abstract.en | 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, spectroscopic, 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. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Gromadzki, Mariusz |
| dc.contributor.author | Hamanowicz, Aleksandra |
| dc.contributor.author | Wyrzykowski, Łukasz |
| dc.contributor.author | Sokolovsky, K. V. |
| dc.contributor.author | Fraser, M. |
| dc.contributor.author | Kozłowski, Szymon |
| dc.contributor.author | Guillochon, J. |
| dc.contributor.author | Arcavi, I. |
| dc.contributor.author | Trakhtenbrot, B. |
| dc.contributor.author | Jonker, P. G. |
| dc.contributor.author | Mattila, S. |
| dc.contributor.author | Udalski, Andrzej |
| dc.contributor.author | Szymański, Michał |
| dc.contributor.author | Soszyński, Igor |
| dc.contributor.author | Poleski, Radosław |
| dc.contributor.author | Pietrukowicz, Paweł |
| dc.contributor.author | Skowron, Jan |
| dc.contributor.author | Mróz, Przemysław |
| dc.contributor.author | Ulaczyk, Krzysztof |
| dc.contributor.author | Pawlak, Michał |
| dc.contributor.author | Rybicki, Krzysztof |
| dc.contributor.author | Sollerman, J. |
| dc.contributor.author | Taddia, F. |
| dc.contributor.author | Kostrzewa-Rutkowska, Zuzanna |
| dc.contributor.author | Onori, F. |
| dc.contributor.author | Young, D. R. |
| dc.contributor.author | Maguire, K. |
| dc.contributor.author | Smartt, S. J. |
| dc.contributor.author | Inserra, C. |
| dc.contributor.author | Gal-Yam, A. |
| dc.contributor.author | Rau, A. |
| dc.contributor.author | Chen, T. -W. |
| dc.contributor.author | Angus, C. R. |
| dc.contributor.author | Buckley, D. A. H. |
| dc.date.accessioned | 2024-01-24T21:54:34Z |
| dc.date.available | 2024-01-24T21:54:34Z |
| dc.date.copyright | 2019-01-24 |
| dc.date.issued | 2019 |
| dc.description.accesstime | AT_PUBLICATION |
| dc.description.finance | Nie dotyczy |
| dc.description.version | FINAL_PUBLISHED |
| dc.description.volume | 622 |
| dc.identifier.doi | 10.1051/0004-6361/201833682 |
| dc.identifier.issn | 0004-6361 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/104970 |
| dc.identifier.weblink | http://adsabs.harvard.edu/abs/2019A&A...622L...2G |
| dc.language | eng |
| dc.pbn.affiliation | astronomy |
| dc.relation.ispartof | Astronomy and Astrophysics |
| dc.relation.pages | L2 |
| dc.rights | CC-BY |
| dc.sciencecloud | nosend |
| dc.title | Discovery and follow-up of the unusual nuclear transient OGLE17aaj |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |