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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731572.0, MPI für Astronomie / Publikationen_mpia
iPTF search for an optical counterpart to gravitational-wave transient GW150914
Authors:Kasliwal, M. M.; Cenko, S. B.; Singer, L. P.; Corsi, A.; Cao, Y.; Barlow, T.; Bhalerao, V.; Bellm, E.; Cook, D.; Duggan, G. E.; Ferretti, R.; Frail, D. A.; Horesh, A.; Kendrick, R.; Kulkarni, S. R.; Lunnan, R.; Palliyaguru, N.; Laher, R.; Masci, F.; Manulis, I.; Miller, A. A.; Nugent, P. E.; Perley, D.; Prince, T. A.; Quimby, R. M.; Rana, J.; Rebbapragada, U.; Sesar, B.; Singhal, A.; Surace, J.; Van Sistine, A.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:The Astrophysical Journal Letters
Volume:824
Issue / Number:2
Start Page:id. L24 (9 pp)
Audience:Not Specified
Abstract / Description:The intermediate Palomar Transient Factory (iPTF) autonomously responded to and promptly tiled the error region of the first gravitational-wave event GW150914 to search for an optical counterpart. Only a small fraction of the total localized region was immediately visible in the northern night sky, due both to Sun-angle and elevation constraints. Here, we report on the transient candidates identified and rapid follow-up undertaken to determine the nature of each candidate. Even in the small area imaged of 126 deg2, after extensive filtering, eight candidates were deemed worthy of additional follow-up. Within two hours, all eight were spectroscopically classified by the Keck II telescope. Curiously, even though such events are rare, one of our candidates was a superluminous supernova. We obtained radio data with the Jansky Very Large Array and X-ray follow-up with the Swift satellite for this transient. None of our candidates appear to be associated with the gravitational-wave trigger, which is unsurprising given that GW150914 came from the merger of two stellar-mass black holes. This end-to-end discovery and follow-up campaign bodes well for future searches in this post-detection era of gravitational waves.
Free Keywords:gravitational waves; methods: observational; techniques: spectroscopic; surveys
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-637X %R 10.3847/2041-8205/824/2/L24
URL:http://cdsads.u-strasbg.fr/abs/2016ApJ...824L..24K
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