Optical Rebrightening of Extragalactic Transients from the Zwicky Transient Facility
| Autor: | Soraisam, Monika, Matheson, Thomas, Lee, Chien-Hsiu, Saha, Abhijit, Narayan, Gautham, Wolf, Nicholas, Scott, Adam, Figuereo, Stephanie, Nunuez, Rafael, McKinnon, Kevin, Guhathakurta, Puragra, Brink, Thomas, Filippenko, Alexei, Smith, Nathan |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/2041-8213/ac4e99 |
| Popis: | Ongoing large-scale optical time-domain surveys, such as the Zwicky Transient Facility (ZTF), are producing alerts at unprecedented rates. Analysis of transient sources has so far followed two distinct paths: archival analysis of data on transient sources at a time when they are no longer observable and real-time analysis at the time when the sources are first detected. The latter is the realm of alert brokers such as the Arizona-NOIRLab Temporal Analysis and Response to Events System (ANTARES). In this paper, we synthesize the two analysis paths and present a first systematic study of archival alert-broker data, focusing on extragalactic transients with multipeaked light curves identified in the ANTARES archive of ZTF alerts. Our analysis yields a sample of 37 such sources, including core-collapse supernovae (with two analogs of iPTF14hls), thermonuclear supernovae interacting with their surrounding circumstellar medium, tidal disruption events, luminous blue variables, and as yet unclassified objects. A large fraction of the identified sources is currently active, warranting allocation of follow-up resources in the immediate future to further constrain their nature and the physical processes at work. Comment: Accepted for publication in ApJ Letters |
| Databáze: | arXiv |
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