RAPIDLY RISING TRANSIENTS IN THE SUPERNOVA-SUPERLUMINOUS SUPERNOVA GAP

被引：105

作者：

Arcavi, Iair ^{[1
,2
]}

Wolf, William M. ^{[3
]}

Howell, D. Andrew ^{[1
,3
]}

Bildsten, Lars ^{[2
,3
]}

Leloudas, Giorgos ^{[4
,5
]}

Hardin, Delphine ^{[6
,7
,8
]}

Prajs, Szymon ^{[9
]}

Perley, Daniel A. ^{[5
]}

Svirski, Gilad ^{[10
]}

Gal-Yam, Avishay ^{[4
]}

Katz, Boaz ^{[4
]}

McCully, Curtis ^{[2
,3
]}

Cenko, S. Bradley ^{[11
,12
]}

Lidman, Chris ^{[13
]}

Sullivan, Mark ^{[9
]}

Valenti, Stefano ^{[2
,3
]}

Astier, Pierre ^{[6
,7
,8
]}

Balland, Cristophe ^{[6
,7
,8
]}

Carlberg, Ray G. ^{[14
]}

Conley, Alex ^{[15
]}

Fouchez, Dominique ^{[16
]}

Guy, Julien ^{[6
,7
,8
]}

Pain, Reynald ^{[6
,7
,8
]}

Palanque-Delabrouille, Nathalie ^{[17
]}

Perrett, Kathy ^{[18
]}

Pritchet, Chris J. ^{[19
]}

Regnault, Nicolas ^{[6
,7
,8
]}

Rich, James ^{[17
]}

Ruhlmann-Kleider, Vanina ^{[17
]}

机构：

[1] Las Cumbres Observ Global Telescope, 6740 Cortona Dr,Suite 102, Goleta, CA 93111 USA

[2] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

[3] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[4] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

[5] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, Juliane Manes Vej 30, DK-2100 Copenhagen, Denmark

[6] CNRS, IN2P3, LPNHE, F-75005 Paris, France

[7] Univ Paris 06, F-75005 Paris, France

[8] Univ Paris 07, F-75005 Paris, France

[9] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[10] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[11] NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Mail Code 661, Greenbelt, MD 20771 USA

[12] Univ Maryland, Joint Space Sci Inst, College Pk, MD 20742 USA

[13] Australian Astron Observ, POB 915, N Ryde, NSW 1670, Australia

[14] Univ Toronto, Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H8, Canada

[15] Univ Colorado, Ctr Astrophys & Space Astron, 389 UCB, Boulder, CO 80309 USA

[16] Aix Marseille Univ, CNRS, IN2P3, CPPM UMR 7346, F-13288 Marseille, France

[17] CEA Saclay, DSM, IRFU, SPP, F-91191 Gif Sur Yvette, France

[18] DRDC Ottawa, 3701 Carling Ave, Ottawa, ON K1A 0Z4, Canada

[19] Univ Victoria, Dept Phys & Astron, POB 3055, Victoria, BC V8W 3P6, Canada

来源：

ASTROPHYSICAL JOURNAL | 2016年 / 819卷 / 01期

基金：

美国安德鲁·梅隆基金会; 美国国家科学基金会; 新加坡国家研究基金会;

关键词：

supernovae:; individual; (PTF10iam; SNLS04D4ec; SNLS05D2bk; SNLS06D1hc; Dougie); WHITE-DWARF MODELS; CORE-COLLAPSE SUPERNOVAE; GAMMA-RAY BURSTS; EXPANDING PHOTOSPHERE METHOD; STAR-FORMING GALAXIES; TIME LIGHT CURVES; SHOCK-BREAKOUT; IA SUPERNOVAE; LEGACY SURVEY; CIRCUMSTELLAR INTERACTION;

D O I：

10.3847/0004-637X/819/1/35

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present observations of four rapidly rising (t(rise) approximate to 10 days) transients with peak luminosities between those of supernovae (SNe) and superluminous SNe (M-peak approximate to-20)-one discovered and followed by the Palomar Transient Factory (PTF) and three by the Supernova Legacy Survey. The light curves resemble those of SN 2011kl, recently shown to be associated with an ultra-long-duration gamma-ray burst (GRB), though no GRB was seen to accompany our SNe. The rapid rise to a luminous peak places these events in a unique part of SN phase space, challenging standard SN emission mechanisms. Spectra of the PTF event formally classify it as an SN II due to broad Ha emission, but an unusual absorption feature, which can be interpreted as either high velocity Ha (though deeper than in previously known cases) or Si II (as seen in SNe Ia), is also observed. We find that existing models of white dwarf detonations, CSM interaction, shock breakout in a wind (or steeper CSM), and magnetar spin down cannot readily explain the observations. We consider the possibility that a "Type 1.5 SN" scenario could be the origin of our events. More detailed models for these kinds of transients and more constraining observations of future such events should help to better determine their nature.

引用

页数：22

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