PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY

E. O. Ofek; S. B. Cenko; N. J. Shaviv; G. Duggan; N. L. Strotjohann; A. Rubin; S. R. Kulkarni; A. Gal-Yam; M. Sullivan; Y. Cao; P. E. Nugent; M. M. Kasliwal; J. Sollerman; C. Fransson; A. V. Filippenko; D. A. Perley; O. Yaron; R. Laher

doi:10.3847/0004-637X/824/1/6

PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY

E. O. Ofek, S. B. Cenko, N. J. Shaviv, G. Duggan, N. L. Strotjohann, A. Rubin, S. R. Kulkarni, A. Gal-Yam, M. Sullivan, Y. Cao, P. E. Nugent, M. M. Kasliwal, J. Sollerman, C. Fransson, A. V. Filippenko, D. A. Perley, O. Yaron, R. Laher

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

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^-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 x 10^-2 to 3.4 x 10³.

Original language	English
Article number	6
Journal	Astrophysical Journal
Volume	824
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/824/1/6
State	Published - 10 Jun 2016

Bibliographical note

Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved..

Keywords

general-supernovae
individual (PTF13efv, SNHunt275)
mass-loss-supernovae
stars

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10.3847/0004-637X/824/1/6

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Ofek, E. O., Cenko, S. B., Shaviv, N. J., Duggan, G., Strotjohann, N. L., Rubin, A., Kulkarni, S. R., Gal-Yam, A., Sullivan, M., Cao, Y., Nugent, P. E., Kasliwal, M. M., Sollerman, J., Fransson, C., Filippenko, A. V., Perley, D. A., Yaron, O., & Laher, R. (2016). PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY. Astrophysical Journal, 824(1), Article 6. https://doi.org/10.3847/0004-637X/824/1/6

@article{bdee594082c7429eb4fa59ba3572d6ad,

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-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 x 10-2 to 3.4 x 103.",

keywords = "general-supernovae, individual (PTF13efv, SNHunt275), mass-loss-supernovae, stars",

author = "Ofek, {E. O.} and Cenko, {S. B.} and Shaviv, {N. J.} and G. Duggan and Strotjohann, {N. L.} and A. Rubin and Kulkarni, {S. R.} and A. Gal-Yam and M. Sullivan and Y. Cao and Nugent, {P. E.} and Kasliwal, {M. M.} and J. Sollerman and C. Fransson and Filippenko, {A. V.} and Perley, {D. A.} and O. Yaron and R. Laher",

year = "2016",

month = jun,

day = "10",

doi = "10.3847/0004-637X/824/1/6",

language = "אנגלית",

volume = "824",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

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Ofek, EO, Cenko, SB, Shaviv, NJ, Duggan, G, Strotjohann, NL, Rubin, A, Kulkarni, SR, Gal-Yam, A, Sullivan, M, Cao, Y, Nugent, PE, Kasliwal, MM, Sollerman, J, Fransson, C, Filippenko, AV, Perley, DA, Yaron, O & Laher, R 2016, 'PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY', Astrophysical Journal, vol. 824, no. 1, 6. https://doi.org/10.3847/0004-637X/824/1/6

TY - JOUR

T1 - PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY

AU - Ofek, E. O.

AU - Cenko, S. B.

AU - Shaviv, N. J.

AU - Duggan, G.

AU - Strotjohann, N. L.

AU - Rubin, A.

AU - Kulkarni, S. R.

AU - Gal-Yam, A.

AU - Sullivan, M.

AU - Cao, Y.

AU - Nugent, P. E.

AU - Kasliwal, M. M.

AU - Sollerman, J.

AU - Fransson, C.

AU - Filippenko, A. V.

AU - Perley, D. A.

AU - Yaron, O.

AU - Laher, R.

PY - 2016/6/10

Y1 - 2016/6/10

N2 - 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-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 x 10-2 to 3.4 x 103.

AB - 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-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 x 10-2 to 3.4 x 103.

KW - general-supernovae

KW - individual (PTF13efv, SNHunt275)

KW - mass-loss-supernovae

KW - stars

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DO - 10.3847/0004-637X/824/1/6

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SN - 0004-637X

VL - 824

JO - Astrophysical Journal

JF - Astrophysical Journal

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M1 - 6

ER -

PTF13efv - AN OUTBURST 500 DAYS PRIOR to the SNHUNT 275 EXPLOSION and ITS RADIATIVE EFFICIENCY

Abstract

Bibliographical note

Keywords

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