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Title: PTF13efv—AN OUTBURST 500 DAYS PRIOR TO THE SNHUNT 275 EXPLOSION AND ITS RADIATIVE EFFICIENCY

Abstract

The progenitors of some supernovae (SNe) exhibit outbursts with super-Eddington luminosities prior to their final explosions. This behavior is common among SNe IIn, but the driving mechanisms of these precursors are not yet well-understood. SNHunt 275 was announced as a possible new SN during 2015 May. Here we report on pre-explosion observations of the location of this event by the Palomar Transient Factory (PTF) and report the detection of a precursor about 500 days prior to the 2015 May activity (PTF 13efv). The observed velocities in the 2015 transient and its 2013 precursor absorption spectra are low (1000–2000 km s{sup −1}), so it is not clear yet if the recent activity indeed marks the final disruption of the progenitor. Regardless of the nature of this event, we use the PTF photometric and spectral observations, as well as Swift -UVOT observations, to constrain the efficiency of the radiated energy relative to the total kinetic energy of the precursor. We find that, using an order-of-magnitude estimate and under the assumption of spherical symmetry, the ratio of the radiated energy to the kinetic energy is in the range of 4 × 10{sup −2} to 3.4 × 10{sup 3}.

Authors:
; ; ; ;  [1];  [2];  [3]; ; ;  [4];  [5];  [6];  [7]; ;  [8];  [9];  [10];  [11]
  1. Benoziyo Center for Astrophysics and the Helen Kimmel Center for Planetary Science, Weizmann Institute of Science, 76100 Rehovot (Israel)
  2. Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD, 20771 (United States)
  3. Racah Institute of Physics, The Hebrew University, 91904 Jerusalem (Israel)
  4. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States)
  5. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom)
  6. Computational Cosmology Center, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
  7. Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena CA 91101 (United States)
  8. Department of Astronomy, The Oskar Klein Centre, Stockholm University, AlbaNova University Centre, SE-106 91 Stockholm (Sweden)
  9. Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)
  10. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark)
  11. Spitzer Science Center, MS 314-6, California Institute of Technology, Pasadena, CA 91125 (United States)
Publication Date:
OSTI Identifier:
22666203
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 824; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; ABSORPTION SPECTRA; DETECTION; EFFICIENCY; EXPLOSIONS; LUMINOSITY; MASS TRANSFER; PRECURSOR; SPHERICAL CONFIGURATION; STELLAR WINDS; SUPERNOVAE; SYMMETRY; TYPE II SUPERNOVAE; VELOCITY

Citation Formats

Ofek, E. O., Strotjohann, N. -L., Rubin, A., Gal-Yam, A., Yaron, O., Cenko, S. B., Shaviv, N. J., Duggan, G., Kulkarni, S. R., Cao, Y., Sullivan, M., Nugent, P. E., Kasliwal, M. M., Sollerman, J., Fransson, C., Filippenko, A. V., Perley, D. A., and Laher, R. PTF13efv—AN OUTBURST 500 DAYS PRIOR TO THE SNHUNT 275 EXPLOSION AND ITS RADIATIVE EFFICIENCY. United States: N. p., 2016. Web. doi:10.3847/0004-637X/824/1/6.
Ofek, E. O., Strotjohann, N. -L., Rubin, A., Gal-Yam, A., Yaron, O., Cenko, S. B., Shaviv, N. J., Duggan, G., Kulkarni, S. R., Cao, Y., Sullivan, M., Nugent, P. E., Kasliwal, M. M., Sollerman, J., Fransson, C., Filippenko, A. V., Perley, D. A., & Laher, R. PTF13efv—AN OUTBURST 500 DAYS PRIOR TO THE SNHUNT 275 EXPLOSION AND ITS RADIATIVE EFFICIENCY. United States. doi:10.3847/0004-637X/824/1/6.
Ofek, E. O., Strotjohann, N. -L., Rubin, A., Gal-Yam, A., Yaron, O., Cenko, S. B., Shaviv, N. J., Duggan, G., Kulkarni, S. R., Cao, Y., Sullivan, M., Nugent, P. E., Kasliwal, M. M., Sollerman, J., Fransson, C., Filippenko, A. V., Perley, D. A., and Laher, R. Fri . "PTF13efv—AN OUTBURST 500 DAYS PRIOR TO THE SNHUNT 275 EXPLOSION AND ITS RADIATIVE EFFICIENCY". United States. doi:10.3847/0004-637X/824/1/6.
@article{osti_22666203,
title = {PTF13efv—AN OUTBURST 500 DAYS PRIOR TO THE SNHUNT 275 EXPLOSION AND ITS RADIATIVE EFFICIENCY},
author = {Ofek, E. O. and Strotjohann, N. -L. and Rubin, A. and Gal-Yam, A. and Yaron, O. and Cenko, S. B. and Shaviv, N. J. and Duggan, G. and Kulkarni, S. R. and Cao, Y. and Sullivan, M. and Nugent, P. E. and Kasliwal, M. M. and Sollerman, J. and Fransson, C. and Filippenko, A. V. and Perley, D. A. and Laher, R.},
abstractNote = {The progenitors of some supernovae (SNe) exhibit outbursts with super-Eddington luminosities prior to their final explosions. This behavior is common among SNe IIn, but the driving mechanisms of these precursors are not yet well-understood. SNHunt 275 was announced as a possible new SN during 2015 May. Here we report on pre-explosion observations of the location of this event by the Palomar Transient Factory (PTF) and report the detection of a precursor about 500 days prior to the 2015 May activity (PTF 13efv). The observed velocities in the 2015 transient and its 2013 precursor absorption spectra are low (1000–2000 km s{sup −1}), so it is not clear yet if the recent activity indeed marks the final disruption of the progenitor. Regardless of the nature of this event, we use the PTF photometric and spectral observations, as well as Swift -UVOT observations, to constrain the efficiency of the radiated energy relative to the total kinetic energy of the precursor. We find that, using an order-of-magnitude estimate and under the assumption of spherical symmetry, the ratio of the radiated energy to the kinetic energy is in the range of 4 × 10{sup −2} to 3.4 × 10{sup 3}.},
doi = {10.3847/0004-637X/824/1/6},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 824,
place = {United States},
year = {2016},
month = {6}
}

Works referencing / citing this record:

The bumpy light curve of Type IIn supernova iPTF13z over 3 years
journal, August 2017


The bumpy light curve of Type IIn supernova iPTF13z over 3 years
journal, August 2017