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| 題名: | A multi-wavelength investigation of the radio-loud supernova PTF11qcj and its circumstellar environment |
| 作者: | 潘彥丞;Corsi, A.;Ofek, E. O.;Gal-Yam, A.;Frail, D. A.;Kulkarni, S. R.;Fox, D. B.;Kasliwal, M. M.;Sullivan, M.;Horesh, A.;Carpenter, J.;Maguire, K.;Arcavi, I.;Cenko, S. B.;Cao, Y.;Mooley, K.;Pan, Y.-C.;Sesar, B.;Sternberg, A.;Xu, D.;Bersier, D.;James, P.;Bloom, J. S.;Nugent, P. E. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;CLASSIFICATION;COMPARATIVE EVALUATIONS;COSMIC GAMMA BURSTS;Ejecta;EMISSION;Explosions;EXTRAPOLATION;Infrared;INTERACTIONS;LUMINOSITY;MASS TRANSFER;Precursors;Progenitors (astrophysics);Radio;STELLAR WINDS;SUPERNOVAE;Supernovas;TRANSIENTS;VELOCITY;VISIBLE RADIATION;WAVELENGTHS;WOLF-RAYET STARS;X RADIATION;X-rays |
| 日期: | 2014-02-10 |
| 上傳時間: | 2026-04-21 14:25:51 (UTC+8) |
| 出版者: | IOP Publishing Ltd.;United States |
| 摘要: | 摘要： We present the discovery, classification, and extensive panchromatic (from radio to X-ray) follow-up observations of PTF11qcj, a supernova (SN) discovered by the Palomar Transient Factory (PTF). Our observations with the Karl G. Jansky Very Large Array show that this event is radio-loud: PTF11qcj reached a radio peak luminosity comparable to that of the famous gamma-ray-burst-associated SN 1998bw (L sub(5 GHz) approximately 10 super(29) erg s super(-1) Hz super(-1)). PTF11qcj is also detected in X-rays with the Chandra Observatory, and in the infrared band with Spitzer. Our multi-wavelength analysis probes the SN interaction with circumstellar material. The radio observations suggest a progenitor mass-loss rate of ~10 super(-4) M sub([middot in circle]) yr super(-1) x ([upsilon] sub(w)/1000 km s super(-1)), and a velocity of approximately 0.3-0.5 c for the fastest moving ejecta (at approximately 10 days after explosion). However, these estimates are derived assuming the simplest model of SN ejecta interacting with a smooth circumstellar wind, and do not account for possible inhomogeneities in the medium and asphericity of the explosion. The radio data show deviations from such a simple model, as well as a late-time re-brightening. The X-ray flux from PTF11qcj is compatible with the high-frequency extrapolation of the radio synchrotron emission (within the large uncertainties). A light echo from pre-existing dust is in agreement with our infrared data. Our pre-explosion data from the PTF suggest that a precursor eruption of absolute magnitude M sub(r) approximately -13 mag may have occurred approximately 2.5 yr prior to the SN explosion. Overall, PTF11qcj fits the expectations from the explosion of a Wolf-Rayet star. Precursor eruptions may be a feature characterizing the final pre-explosion evolution of such stars.
出版者： United States
出版日期： 2014-02-10
出處： The Astrophysical journal, 2014-02, Vol.782 (1), p.42-18
資源來源： IoP Science journals
識別號： ISSN: 0004-637X
識別號： ISSN: 1538-4357
識別號： EISSN: 1538-4357
識別號： DOI: 10.1088/0004-637X/782/1/42 |
| 顯示於類別: | [天文研究所] 期刊論文
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