Slowly fading super-luminous supernovae that are not pair-instability explosions

  title={Slowly fading super-luminous supernovae that are not pair-instability explosions},
  author={M. Nicholl and S. Smartt and A. Jerkstrand and C. Inserra and M. McCrum and R. Kotak and M. Fraser and D. Wright and T.-W. Chen and K. Smith and D. Young and S. Sim and S. Valenti and D. Howell and F. Bresolin and R. Kudritzki and J. Tonry and M. Huber and A. Rest and A. Pastorello and L. Tomasella and E. Cappellaro and S. Benetti and S. Mattila and E. Kankare and T. Kangas and G. Leloudas and J. Sollerman and F. Taddia and E. Berger and R. Chornock and G. Narayan and C. Stubbs and R. Foley and R. Lunnan and A. Soderberg and N. Sanders and D. Milisavljevic and R. Margutti and R. Kirshner and N. Elias-rosa and A. Morales-Garoffolo and S. Taubenberger and M. Botticella and S. Gezari and Y. Urata and S. Rodney and A. Riess and D. Scolnic and W. Wood-Vasey and W. Burgett and K. Chambers and H. Flewelling and E. Magnier and N. Kaiser and N. Metcalfe and J. Morgan and P. Price and W. Sweeney and C. Waters},
Super-luminous supernovae that radiate more than 1044 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1–4. Some evolve slowly, resembling models of ‘pair-instability’ supernovae. Such models involve stars with original masses 140–260 times that of the Sun that now have carbon–oxygen cores of 65–130 solar masses. In these stars, the photons that prevent gravitational collapse are converted to electron–positron pairs, causing rapid… Expand
Observational properties of low-redshift pair instability supernovae
Context. So called superluminous supernovae have been recently discovered in the local Universe. It appears possible that some of them originate from stellar explosions induced by the pairExpand
Quark deconfinement as a supernova explosion engine for massive blue supergiant stars
Blue supergiant stars develop into core-collapse supernovae—one of the most energetic outbursts in the Universe—when all nuclear burning fuel is exhausted in the stellar core. Previous attempts haveExpand
Pair-instability Supernovae in the Local Universe
The discovery of 150-300 M {sub ☉} stars in the Local Group and pair-instability supernova candidates at low redshifts has excited interest in this exotic explosion mechanism. Realistic light curvesExpand
Hydrogen-Poor Superluminous Supernovae and Long-Duration Gamma-Ray Bursts Have Similar Host Galaxies
We present optical spectroscopy and optical/near-IR photometry of 31 host galaxies of hydrogen-poor superluminous supernovae (SLSNe), including 15 events from the Pan-STARRS1 Medium Deep Survey. OurExpand
Studying newborn neutron stars by the transient emission after stellar collapses and compact binary mergers.
The formation of neutron stars (NSs), both from collapses of massive stars and mergers of compact objects, can be usually indicated by bright transients emitted from explosively-ejected material. InExpand
The formation and gravitational-wave detection of massive stellar black hole binaries
If binaries consisting of two ∼ 100M⊙ black holes exist they would serve as extraordinarily powerful gravitational-wave sources, detectable to redshifts of z ∼ 2 with the advanced LIGO/VirgoExpand
Superluminous supernova progenitors have a half-solar metallicity threshold
Host galaxy properties provide strong constraints on the stellar progenitors of superluminous supernovae. By comparing a sample of 19 low-redshift (z < 0.3) superluminous supernova hosts to galaxyExpand
Super-luminous Type II supernovae powered by magnetars
Magnetar power is believed to be at the origin of numerous super-luminous supernovae (SNe) of Type Ic, arising from compact, hydrogen-deficient, Wolf-Rayet type stars. Here, we investigate theExpand
Luminous Blue Variables and superluminous supernovae from binary mergers
Evidence suggests that the direct progenitor stars of some core-collapse supernovae (CCSNe) are luminous blue variables (LBVs), perhaps including some `superluminous supernovae' (SLSNe). We examineExpand
Pulsations of red supergiant pair-instability supernova progenitors leading to extreme mass loss
Recent stellar evolution models show consistently that very massive metal-free stars evolve into red supergiants shortly before they explode. We argue that the envelopes of these stars, which willExpand


Luminous Supernovae
High-resolution spectroscopy of the supernova PTF 11kx is reported, which was detected on 26 January 2011 by the Palomar Transient Factory survey, and the data suggest a red giant star companion whose material got transferred to the white dwarf. Expand
Hydrogen-poor superluminous stellar explosions
Observations of a class of luminous supernovae whose properties cannot be explained by any of the following processes: radioactive decay of freshly synthesized elements, explosion shock in the envelope of a supergiant star, and interaction between the debris and slowly moving, hydrogen-rich circumstellar material. Expand
Pulsational pair instability as an explanation for the most luminous supernovae
It is reported that the brightest supernovae in the modern Universe arise from collisions between shells of matter ejected by massive stars that undergo an interior instability arising from the production of electron–positron pairs. Expand
Supernova 2007bi as a pair-instability explosion
Observations of supernova SN 2007bi are reported, a luminous, slowly evolving object located within a dwarf galaxy, and it is shown that >3 of radioactive 56Ni was synthesized during the explosion and that the observations are well fitted by models of pair-instability supernovae. Expand
Superluminous supernovae at redshifts of 2.05 and 3.90
The extreme luminosities of superluminous supernovae extend the redshift limit for supernova detection using present technology, and provide a way of investigating the deaths of the first generation of stars to form after the Big Bang. Expand
For the initial mass range (140 M ☉ < M < 260 M ☉) stars die in a thermonuclear runaway triggered by the pair-production instability. The supernovae they make can be remarkably energetic (up to ~1053Expand
Core-collapse supernovae in low-metallicity environments and future all-sky transient surveys
Aims. Massive stars in low-metallicity environments may produce exotic explosions such as long-duration gamma-ray bursts and pair-instability supernovae when they die as core-collapse supernovaeExpand
Some fraction of the material ejected in a core collapse supernova explosion may remain bound to the compact remnant, and eventually turn around and fall back. We show that the late timeExpand
The Early Evolution of Primordial Pair-Instability Supernovae
The observational signatures of the first cosmic explosions and their chemical imprint on second-generation stars both crucially depend on how heavy elements mix within the star at the earliestExpand
Signatures of pulsars in the light curves of newly formed supernova remnants
We explore the effect of pulsars, in particular those born with millisecond periods, on their surrounding supernova ejectas. While they spin down, fast-spinning pulsars release their tremendousExpand