Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/30138
Title: | Unveiling the enigma of ATLAS17aeu | Authors: | MELANDRI, Andrea ROSSI, Andrea BENETTI, Stefano D'Elia, V. PIRANOMONTE, Silvia PALAZZI, ELIANA Levan, A. J. Branchesi, M. Castro-Tirado, A. J. D'AVANZO, Paolo Hu, Y. -D. RAIMONDO, Gabriella Tanvir, N. R. TOMASELLA, Lina AMATI, LORENZO CAMPANA, Sergio CARINI, Roberta COVINO, Stefano CUSANO, FELICE DADINA, MAURO DELLA VALLE, Massimo Fan, X. Garnavich, P. GRADO, ANIELLO Greco, G. Hjorth, J. Lyman, J. D. MASETTI, NICOLA O'Brien, P. PIAN, Elena Perego, A. SALVATERRA, Ruben STELLA, Luigi Stratta, G. Yang, S. DI PAOLA, Andrea Caballero-García, M. D. Fruchter, A. S. Giunta, A. Longo, F. Pinamonti, Matteo Sokolov, V. V. TESTA, Vincenzo Valeev, A. F. BROCATO, Enzo |
Issue Date: | 2019 | Journal: | ASTRONOMY & ASTROPHYSICS | Number: | 621 | First Page: | A81 | Abstract: | Aims: The unusual transient ATLAS17aeu was serendipitously detected within the sky localisation of the gravitational wave trigger GW 170104. The importance of a possible association with gravitational waves coming from a binary black hole merger led to an extensive follow-up campaign, with the aim of assessing a possible connection with GW 170104. Methods: With several telescopes, we carried out both photometric and spectroscopic observations of ATLAS17aeu, for several epochs, between ∼3 and ∼230 days after the first detection. <BR /> Results: We studied in detail the temporal and spectroscopic properties of ATLAS17aeu and its host galaxy. Although at low significance and not conclusive, we found similarities to the spectral features of a broad-line supernova superposed onto an otherwise typical long-GRB afterglow. Based on analysis of the optical light curve, spectrum, and host galaxy spectral energy distribution, we conclude that the redshift of the source is probably z ≃ 0.5 ± 0.2. <BR /> Conclusions: While the redshift range we have determined is marginally compatible with that of the gravitational wave event, the presence of a supernova component and the consistency of this transient with the E<SUB>p</SUB>-E<SUB>iso</SUB> correlation support the conclusion that ATLAS17aeu was associated with the long gamma-ray burst GRB 170105A. This rules out the association of the GRB 170105A/ATLAS17aeu transient with the gravitational wave event GW 170104, which was due to a binary black hole merger. <P />Based on observations made with the following telescopes: Copernico, TNG (under programme A34TAC_24), GTC (under programmes GTCMULTIPLE2D-16B and GTCMULTIPLE2G-17A), LBT (under programme 2016_2017_19), and HST (under programme GO14270).Spectral data for this source shown on this paper are available on the Weizmann Interactive Supernova Data Repository (WISeREP, <A href="https://wiserep.weizmann.ac.il/">http://https://wiserep.weizmann.ac.il/</A>). | URI: | http://hdl.handle.net/20.500.12386/30138 | URL: | http://arxiv.org/abs/1807.03681v1 https://www.aanda.org/articles/aa/full_html/2019/01/aa33814-18/aa33814-18.html |
ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201833814 | Bibcode ADS: | 2019A&A...621A..81M | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
aa33814-18.pdf | Pdf editoriale | 1.37 MB | Adobe PDF | View/Open |
Page view(s)
65
checked on Mar 19, 2024
Download(s)
29
checked on Mar 19, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.