PTF11rka: an interacting supernova at the crossroads of stripped-envelope and H-poor super-luminous stellar core collapses
Elena Pian, Paolo A. Mazzali, Takashi J. Moriya, Adam Rubin, Avishay Gal-Yam, Iair Arcavi, Sagi Ben-Ami, Nadia Blagorodnova, Milena Bufano, Alex V. Filippenko, … 展开作者
Elena Pian, Paolo A. Mazzali, Takashi J. Moriya, Adam Rubin, Avishay Gal-Yam, Iair Arcavi, Sagi Ben-Ami, Nadia Blagorodnova, Milena Bufano, Alex V. Filippenko, Mansi Kasliwal, Shri R. Kulkarni, Ragnhild Lunnan, Ilan Manulis, Tom Matheson, Peter E. Nugent, Eran Ofek, Dan A. Perley, Simon J. Prentice, Ofer Yaron
The hydrogen-poor supernova PTF11rka (z = 0.0744), reported by the Palomar Transient Factory, was observed with various telescopes starting a few days after the estimated explosion time of 2011 Dec. 5 UT and up to 432 rest-frame days thereafter. The rising part of the light curve was monitored only in the R_PTF filter band, and maximum in this band was reached ~30 rest-frame days after the estimated explosion time. The light curve and spectra of PTF11rka are consistent with the core-collapse explosion of a ~10 Msun carbon-oxygen core evolved from a progenitor of main-sequence mass 25--40 Msun, that liberated a kinetic energy (KE) ~ 4 x 10^{51} erg, expelled ~8 Msun of ejecta (Mej), and synthesised ~0.5 Msun of 56Nichel. The photospheric spectra of PTF11rka are characterised by narrow absorption lines that point to suppression of the highest ejecta velocities ~>15,000 km/s. This would be expected if the ejecta impacted a dense, clumpy circumstellar medium. This in turn caused them to lose a fraction of their energy (~5 x 10^50 erg), less than 2% of which was converted into radiation that sustained the light curve before maximum brightness. This is reminiscent of the superluminous SN 2007bi, the light-curve shape and spectra of which are very similar to those of PTF11rka, although the latter is a factor of 10 less luminous and evolves faster in time. PTF11rka is in fact more similar to gamma-ray burst supernovae (GRB-SNe) in luminosity, although it has a lower energy and a lower KE/Mej ratio.
Explosive nucleosynthesis of ultra-stripped Type Ic supernovae: application to light trans-iron elements
研究了由1.45和1.5 M $_\odot$ CO星演化的超剥离Ic型超新星在中微子驱动的二维爆炸过程中的爆炸核合成。这些超新星以$\sim 10^{50}$ erg的爆炸能量爆炸并释放出$\sim 0.1$ M $_\odot$喷出物。轻的反式铁元素Ga-Zr在中微子辐照的喷出物中产生。这些元素的丰度分布有很大的不确定性,因为中微子照射的喷出物的电子分数的不确定性。元素的产率将小于0.01 M $_\odot$。由轻CO核演化而来的超剥离超新星和核塌缩超新星可能是轻反式铁元素的主要来源。它们也能产生富中子核$^{48}$ Ca。超剥离超新星喷出$^{56}$ Ni,$\sim$为0.006 - 0.01 M $_\odot$。如果大部分中微子辐照的喷出物是富质子的,则会产生更多的$^{56}$ Ni。这些超新星的光变曲线表明它们是一种亚发光的快速衰变爆炸,峰值量级约为$-15$ - $-16$。未来对超剥离超新星的观测可能会对一类中子星合并的事件率产生限制。
SN 2021lwz: Another Exotic Luminous and Fast Evolving Optical Stripped Envelope Supernova ?
Instituto de Astrofísica de Canarias(加那利天体物理学研究所);Universidad de La Laguna(拉古纳大学);Konkoly Observatory, CSFK(孔科利天文台,匈牙利科学院研究网络);Department of Optics & Quantum Electronics, University of Szeged(塞格德大学光学与量子电子学系);ELTE Eötvös Loránd University, Gothard Astrophysical Observatory(厄特沃什·洛兰大学戈塔德天体物理观测站);Graduate Institute of Astronomy, National Central University(国立中央大学天文学研究所);GRANTECAN(格兰特卡南望远镜);The Oskar Klein Centre, Department of Astronomy, Stockholm University(斯德哥尔摩大学奥斯特云中心天文学系);Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所);Department of Astronomy, University of California, Berkeley(加州大学伯克利分校天文学系)
Evidence for Late-stage Eruptive Mass-loss in the Progenitor to SN2018gep, a Broad-lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient
Ultraviolet spectroscopy reveals a hot and luminous companion to the Be star+black hole candidate MWC 656
Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所);Fakultät für Physik und Astronomie, Universität Heidelberg(海德堡大学物理与天文学院);Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut(海德堡大学天文学中心,天文计算研究所);Department of Astronomy, California Institute of Technology(加州理工学院天文学系);Interdisziplinäres Zentrum für Wissenschaftliches Rechnen, Universität Heidelberg(海德堡大学跨学科科学计算中心);Anton Pannekoek Institute for Astronomy, University of Amsterdam(阿姆斯特丹大学安东·潘内科克天文学研究所);Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University(佐治亚州立大学高分辨率天文学中心及物理与天文学系);Institute of Science and Technology Austria (ISTA)(奥地利科学技术研究所);European Organisation for Astronomical Research in the Southern Hemisphere(欧洲南方天文台)
A proto-helium white dwarf stripped by a substellar companion via common-envelope ejection -- Uncovering the true nature of a candidate hypervelocity B-type star
A low mass, binary-stripped envelope for the Type IIb SN 2024abfo
DTU Space, Technical University of Denmark(丹麦技术大学空间中心);South African Astronomical Observatory(南非天文台);Department of Astronomy, University of Cape Town(开普敦大学天文学系);Department of Physics, Stellenbosch University(斯泰伦博斯大学物理系);Department of Astrophysics/IMAPP, Radboud University(拉德堡德大学天体物理学/IMAPP系);Department of Particle Physics and Astrophysics, Weizmann Institute of Science(魏茨曼科学研究所粒子物理与天体物理系)
SN 2024abfo是具有直接前身体检测的最暗淡IIb型超新星,其低质量氢包层可能由二元系统导致,光谱特征与SN 2008ax相似,但无双峰光变曲线。
Unveiling the nature of SN 2022jli: The first double-peaked stripped-envelope supernova showing periodic undulations and dust emission at late times
Gemini Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory(吉米尼天文台,美国国家光学红外天文研究实验室);Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales(迭戈·波塔莱斯大学工程与科学学院天体物理研究所);Centro de Astronomía (CITEVA), Universidad de Antofagasta(安托法加斯塔大学天文学中心);Las Campanas Observatory, Carnegie Observatories(卡内基观测台拉斯坎帕纳斯天文台);Department of Physics and Astronomy, Aarhus University(奥胡斯大学物理与天文学系);Fundación Chilena de Astronomía(智利天文学基金会);Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas(西班牙高等科学研究中心基础物理研究所);Institut de Ciències del Cosmos (UB-IEEC)(宇宙科学研究所);Millennium Institute of Astrophysics MAS(天体物理学千年研究所);European Southern Observatory(欧洲南方天文台)
SN 2022jli是首个双峰剥离包层超新星,表现出周期性波动和尘埃发射,研究其二次峰值可能由磁星驱动,揭示SE超亮超新星的物理机制。
GRB 220706A: a gamma-ray burst with a month-long engine and a luminous supernova
University of Birmingham(伯明翰大学);University of Leicester(莱斯特大学);Eureka Scientific(尤里卡科学公司);Aix Marseille Univ.(艾克斯-马赛大学);CNRS(法国国家科学研究中心);CNES(法国国家空间研究中心);Cosmic Dawn Center (DAWN)(宇宙黎明中心);Niels Bohr Institute, University of Copenhagen(哥本哈根大学尼尔斯·玻尔研究所);Centro Astronómico Hispano en Andalucía, Observatorio de Calar Alto(安达卢西亚西班牙天文中心,卡拉阿托天文台);Institut de Radio Astronomie Millimétrique (IRAM)(毫米波射电天体物理研究所);Radboud University(拉德堡德大学);University of Warwick(华威大学)
GRB 220706A在红移0.8577处展现持续至静止系27天的耀发活动,为迄今最晚的引擎活动,并伴随类似SN 2011kl的超亮超新星,对超长GRB前身星模型提出挑战。
Luminous Fast Blue Optical Transients as "Failed" Gravitational-wave Sources: Helium Core$-$Black Hole Mergers Following Delayed Dynamical Instability
Max Planck Institute for Astrophysics(马克斯·普朗克天体物理学研究所);Columbia University(哥伦比亚大学);Center for Computational Astrophysics, Flatiron Institute(Flatiron研究所计算天体物理中心)
Decadal pre-explosion activity and circumstellar interaction in a supernova
National Central University(国立中央大学);Henan Academy of Sciences(河南省科学院);University of Oxford(牛津大学);National Astronomical Observatory of Japan(日本国立天文台);SOKENDAI(综合研究大学院大学);Monash University(蒙纳士大学);Aarhus University(奥胡斯大学);Max Planck Institute for Extraterrestrial Physics(马克斯·普朗克地外物理研究所);The Australian National University(澳大利亚国立大学)
Line Identifications of Type I Supernovae: On the Detection of Si II for these Hydrogen-poor Events
在这里,我们重新审视线识别I型超新星和突出微量的未燃烧的氢作为一个重要的自由参数的组成的祖。大多数超新星的一维剥离包络模型表明,在I型光谱中观察到的6000-6400 Ang附近的特征是由于Si II 6355以上。然而,虽然在第一个月的自由膨胀期间,对显著的Si II 6355的解释可以近似6150 Ang吸收特征,但适用于Ib和Ic型超新星的6250 Ang特征的类似鉴定并不成功。当将相应的合成光谱与高质量的时间序列观测值进行比较时,计算出的光谱在波长上经常太蓝。一些改善可以实现与Fe II线,有助于红色的6150昂,然而,计算的光谱要么保持太蓝,或光谱只有达到公平的协议时,上升时间峰值亮度的模型与观察的冲突的一个因素的两倍。这种程度的分歧使人们对拟议的爆炸情景产生了疑问。同样,在宽线Ic和I/R型超亮事件的光谱中检测到强Si II 6355也不太令人信服,尽管有许多模型光谱用于显示其他情况。另外,我们建议6000-6400 Ang的功能可能是由微量的氢,或蓝移的吸收和发射的H α,后者是一种效果,这是经常观察到的富氢,II型超新星的光谱影响。
Bridging the gap between SLSNe and SE-SNe. Multi-wavelength analysis of the SLSN-Ib SN 2024jlc
INAF - Osservatorio Astronomico di Roma(罗马天文台意大利国家天体物理研究所);Università Tor Vergata, Dipartimento di Fisica(托尔维尔加塔大学物理系);FSLAC IRL 2009, CNRS/IAC(CNRS/IAC FSLAC IRL 2009);Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM(巴黎萨克雷大学、巴黎西岱大学、CEA、CNRS、AIM);Institute of Space Sciences (ICE, CSIC)(空间科学研究所(ICE,CSIC));Institut d’Estudis Espacials de Catalunya (IEEC)(加泰罗尼亚太空研究学院(IEEC));Astrophysics Research Institute, Liverpool John Moores University(利物浦约翰摩尔斯大学天体物理研究所);The Oskar Klein Centre, Department of Astronomy, AlbaNova(阿尔巴诺瓦奥斯卡·克莱因中心天文学系);Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA)(天体物理学跨学科探索与研究中心(CIERA));University College London, Mullard Space Science Laboratory(伦敦大学学院穆拉德空间科学实验室);IPAC, California Institute of Technology(加州理工学院IPAC);Caltech Optical Observatories, California Institute of Technology(加州理工学院帕萨迪纳光学观测站)
通过多波段观测分析最邻近的SLSN-Ib SN 2024jlc,发现其低峰值亮度、慢演化及氦富集特征,支持星周介质相互作用和磁星自转模型,并暗示γ射线信号,认为该超新星可能桥接超亮超新星与经典剥离包层超新星。