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    Rights statement: The final, definitive version of this article has been published in the Journal, Astronomy & Astrophysics, 580 2015, © EDP Sciences

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A remarkable recurrent nova in M 31: the predicted 2014 outburst in X-rays with Swift

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A remarkable recurrent nova in M 31 : the predicted 2014 outburst in X-rays with Swift. / Henze, M.; Ness, J.-U.; Darnley, M. J.; Bode, M. F.; Williams, S. C.; Shafter, A. W.; Sala, G.; Kato, M.; Hachisu, I.; Hernanz, M.

In: Astronomy and Astrophysics, Vol. 580, 46, 01.08.2015.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Henze, M, Ness, J-U, Darnley, MJ, Bode, MF, Williams, SC, Shafter, AW, Sala, G, Kato, M, Hachisu, I & Hernanz, M 2015, 'A remarkable recurrent nova in M 31: the predicted 2014 outburst in X-rays with Swift', Astronomy and Astrophysics, vol. 580, 46. https://doi.org/10.1051/0004-6361/201526028

APA

Henze, M., Ness, J-U., Darnley, M. J., Bode, M. F., Williams, S. C., Shafter, A. W., Sala, G., Kato, M., Hachisu, I., & Hernanz, M. (2015). A remarkable recurrent nova in M 31: the predicted 2014 outburst in X-rays with Swift. Astronomy and Astrophysics, 580, [46]. https://doi.org/10.1051/0004-6361/201526028

Vancouver

Henze M, Ness J-U, Darnley MJ, Bode MF, Williams SC, Shafter AW et al. A remarkable recurrent nova in M 31: the predicted 2014 outburst in X-rays with Swift. Astronomy and Astrophysics. 2015 Aug 1;580. 46. https://doi.org/10.1051/0004-6361/201526028

Author

Henze, M. ; Ness, J.-U. ; Darnley, M. J. ; Bode, M. F. ; Williams, S. C. ; Shafter, A. W. ; Sala, G. ; Kato, M. ; Hachisu, I. ; Hernanz, M. / A remarkable recurrent nova in M 31 : the predicted 2014 outburst in X-rays with Swift. In: Astronomy and Astrophysics. 2015 ; Vol. 580.

Bibtex

@article{766bd6eb5c8041d88607eb53639b1ed5,
title = "A remarkable recurrent nova in M 31: the predicted 2014 outburst in X-rays with Swift",
abstract = "Context. The M 31 nova M31N 2008-12a was recently found to be a recurrent nova (RN) with a recurrence time of about one year. This is by far the fastest recurrence time scale of any known RN. Aims: Our optical monitoring programme detected the predicted 2014 outburst of M31N 2008-12a in early October. We immediately initiated an X-ray/UV monitoring campaign with Swift to study the multiwavelength evolution of the outburst. Methods: We monitored M31N 2008-12a with daily Swift observations for 20 days after discovery, covering the entire supersoft X-ray source (SSS) phase. Results: We detected SSS emission around day six after outburst. The SSS state lasted for approximately two weeks until about day 19. M31N 2008-12a was a bright X-ray source with a high blackbody temperature. Conclusions: The X-ray properties of this outburst are very similar to the 2013 eruption. Combined X-ray spectra show a fast rise and decline of the effective blackbody temperature. The short-term X-ray light curve showed strong, aperiodic variability which decreased significantly after about day 14. Overall, the X-ray properties of M31N 2008-12a are consistent with the average population properties of M 31 novae. The optical and X-ray light curves can be scaled uniformly to show similar time scales to those of the Galactic RNe U Sco or RS Oph. The SSS evolution time scales and effective temperatures are consistent with a high-mass WD. We predict the next outburst of M31N 2008-12a to occur in Oct.-Dec. 2015.",
author = "M. Henze and J.-U. Ness and Darnley, {M. J.} and Bode, {M. F.} and Williams, {S. C.} and Shafter, {A. W.} and G. Sala and M. Kato and I. Hachisu and M. Hernanz",
note = "The final, definitive version of this article has been published in the Journal, Astronomy & Astrophysics, 580 2015, {\textcopyright} EDP Sciences",
year = "2015",
month = aug,
day = "1",
doi = "10.1051/0004-6361/201526028",
language = "English",
volume = "580",
journal = "Astronomy and Astrophysics",
issn = "1432-0746",
publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - A remarkable recurrent nova in M 31

T2 - the predicted 2014 outburst in X-rays with Swift

AU - Henze, M.

AU - Ness, J.-U.

AU - Darnley, M. J.

AU - Bode, M. F.

AU - Williams, S. C.

AU - Shafter, A. W.

AU - Sala, G.

AU - Kato, M.

AU - Hachisu, I.

AU - Hernanz, M.

N1 - The final, definitive version of this article has been published in the Journal, Astronomy & Astrophysics, 580 2015, © EDP Sciences

PY - 2015/8/1

Y1 - 2015/8/1

N2 - Context. The M 31 nova M31N 2008-12a was recently found to be a recurrent nova (RN) with a recurrence time of about one year. This is by far the fastest recurrence time scale of any known RN. Aims: Our optical monitoring programme detected the predicted 2014 outburst of M31N 2008-12a in early October. We immediately initiated an X-ray/UV monitoring campaign with Swift to study the multiwavelength evolution of the outburst. Methods: We monitored M31N 2008-12a with daily Swift observations for 20 days after discovery, covering the entire supersoft X-ray source (SSS) phase. Results: We detected SSS emission around day six after outburst. The SSS state lasted for approximately two weeks until about day 19. M31N 2008-12a was a bright X-ray source with a high blackbody temperature. Conclusions: The X-ray properties of this outburst are very similar to the 2013 eruption. Combined X-ray spectra show a fast rise and decline of the effective blackbody temperature. The short-term X-ray light curve showed strong, aperiodic variability which decreased significantly after about day 14. Overall, the X-ray properties of M31N 2008-12a are consistent with the average population properties of M 31 novae. The optical and X-ray light curves can be scaled uniformly to show similar time scales to those of the Galactic RNe U Sco or RS Oph. The SSS evolution time scales and effective temperatures are consistent with a high-mass WD. We predict the next outburst of M31N 2008-12a to occur in Oct.-Dec. 2015.

AB - Context. The M 31 nova M31N 2008-12a was recently found to be a recurrent nova (RN) with a recurrence time of about one year. This is by far the fastest recurrence time scale of any known RN. Aims: Our optical monitoring programme detected the predicted 2014 outburst of M31N 2008-12a in early October. We immediately initiated an X-ray/UV monitoring campaign with Swift to study the multiwavelength evolution of the outburst. Methods: We monitored M31N 2008-12a with daily Swift observations for 20 days after discovery, covering the entire supersoft X-ray source (SSS) phase. Results: We detected SSS emission around day six after outburst. The SSS state lasted for approximately two weeks until about day 19. M31N 2008-12a was a bright X-ray source with a high blackbody temperature. Conclusions: The X-ray properties of this outburst are very similar to the 2013 eruption. Combined X-ray spectra show a fast rise and decline of the effective blackbody temperature. The short-term X-ray light curve showed strong, aperiodic variability which decreased significantly after about day 14. Overall, the X-ray properties of M31N 2008-12a are consistent with the average population properties of M 31 novae. The optical and X-ray light curves can be scaled uniformly to show similar time scales to those of the Galactic RNe U Sco or RS Oph. The SSS evolution time scales and effective temperatures are consistent with a high-mass WD. We predict the next outburst of M31N 2008-12a to occur in Oct.-Dec. 2015.

U2 - 10.1051/0004-6361/201526028

DO - 10.1051/0004-6361/201526028

M3 - Journal article

VL - 580

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 1432-0746

M1 - 46

ER -