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Supernova light curves pow ered by young m agnetars
D aniel K asen,Lars Bildsten +1 more
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TLDR
In this article, the authors show that energy injected into an expanding supernova by a highly magnetic (B � 5 � 10 14 G)neutron starspinning at an initial period of Pi 2 20 m scan substantially brightens the lightcurve.Abstract:
W e show thatenergy deposited into an expanding supernova rem nantby a highly m agnetic (B � 5 � 10 14 G)neutron starspinning atan initialperiod of Pi � 2 20 m scan substantially brighten the lightcurve. Form agnetarswith param etersin thisrange,the rotationalenergy isreleased on a tim escaleofdaysto weeks,which iscom parableto theeectivediusion tim ethrough thesupernova rem nant.Thelatetim eenergyinjectioncanthenberadiatedwithoutsueringoverwhelm ingadiabatic expansion losses. The m agnetar input also produces a centralbubble which sweeps ejecta into an internaldense shell,resulting in a prolonged period ofnearly constantphotospheric velocity in the observed spectra.W ederiveanalyticexpressionsforthelightcurverisetim eand peak lum inosity as a function of B, Pi and the propertiesofthe supernova ejecta thatallow fordirectinferencesabout the underlying m agnetar in bright supernovae. W e perform num ericalradiation hydrodynam ical calculations ofa few specic instances and com pare the resulting light curves to observed events. M agnetaractivity is likely to im pact m ore than a few percentofallcore collapse supernovae,and m ay naturally explain som e ofthe brightest events ever seen (e.g.,SN 2005ap and SN 2008es) at L & 10 44 ergss 1 . Subjectheadings: radiativetransfer{ stars:neutron { supernovae:general{ supernovae:individual (SN 2005ap,SN 2008es,SN 2007bi)read more
Citations
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Effects of Fall-Back Accretion on Proto-Magnetar Outflows in Gamma-Ray Bursts and Superluminous Supernovae
TL;DR: In this paper, an accreting magnetar has been used as a source of rotational energy for long-duration gamma-ray bursts (GRB), superluminous supernovae (SLSNe), and binary neutron star mergers.
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Are Superluminous Supernovae and Long GRBs the Products of Dynamical Processes in Young Dense Star Clusters
TL;DR: In this article, the authors show that superluminous supernovae (SLSNe) occur almost exclusively in small galaxies (SMC/LMC-like or smaller), and the few SLSNe observed in larger star-forming galaxies always occur close to the nuclei of their hosts.
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Searching for magnetar powered merger-novae from short GRBs
TL;DR: In this article, the authors carried out a complete search for magnetar-powered merger-nova from short gamma-ray burst (SGRB) sample, focusing on short GRBs with extended emission or internal plateau, which may signify the presence of magnetars as the central engine.
Journal ArticleDOI
Type II supernova energetics and comparison of light curves to shock-cooling models
Adam Rubin,Avishay Gal-Yam,Annalisa De Cia,Assaf Horesh,D. Khazov,Eran O. Ofek,Shrinivas R. Kulkarni,Iair Arcavi,Iair Arcavi,Ilan Manulis,O. Yaron,Paul Vreeswijk,Mansi M. Kasliwal,Sagi Ben-Ami,Daniel A. Perley,Daniel A. Perley,Yi Cao,S. Bradley Cenko,S. Bradley Cenko,Umaa Rebbapragada,Przemek Woźniak,Alexei V. Filippenko,Kelsey I. Clubb,Peter Nugent,Peter Nugent,Yen-Chen Pan,C. Badenes,D. Andrew Howell,D. Andrew Howell,Stefano Valenti,David J. Sand,Jesper Sollerman,Joel Johansson,Douglas C. Leonard,J. Chuck Horst,Stephen F. Armen,Joseph M. Fedrow,Joseph M. Fedrow,Robert M. Quimby,Robert M. Quimby,P. A. Mazzali,Elena Pian,Assaf Sternberg,Thomas Matheson,Mark Sullivan,Kate Maguire,S. Lazarevic +46 more
TL;DR: In this article, a sample of $57$ $R$-band Type II supernovae (SNe) light curves was used to estimate the energy per unit mass (E/M$) of the first few days after the explosion.
Journal ArticleDOI
A search for fast optical transients in the Pan-STARRS1 Medium-Deep survey : M-dwarf flares, asteroids, limits on extragalactic rates, and implications for LSST.
Edo Berger,C. Leibler,C. Leibler,Ryan Chornock,Armin Rest,Ryan J. Foley,Alicia M. Soderberg,Paul A. Price,William S. Burgett,K. C. Chambers,H. Flewelling,Mark E. Huber,Eugene A. Magnier,Nigel Metcalfe,Christopher W. Stubbs,John L. Tonry +15 more
TL;DR: In this article, a search for fast optical transients (? ~ 0.5 hr-1 day) using repeated observations of the Pan-STARRS1 Medium-Deep Survey (PS1/MDS) fields is presented.
References
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Journal ArticleDOI
Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts
TL;DR: In this article, it is argued that a convective dynamo can also generate a very strong dipole field after the merger of a neutron star binary, but only if the merged star survives for as long as about 10-100 ms.
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The Palomar Transient Factory: system overview, performance and first results
Nicholas M. Law,Shrinivas R. Kulkarni,Richard Dekany,Eran O. Ofek,Robert M. Quimby,Peter Nugent,Jason Surace,C. Grillmair,Joshua S. Bloom,Mansi M. Kasliwal,Lars Bildsten,Timothy M. Brown,S. Bradley Cenko,David R. Ciardi,Ernest Croner,S. George Djorgovski,Julian C. van Eyken,Alexei V. Filippenko,Derek B. Fox,Avishay Gal-Yam,David Hale,Nouhad Hamam,George Helou,John Henning,D. Andrew Howell,D. Andrew Howell,Janet Jacobsen,Russ R. Laher,S. Mattingly,D. McKenna,A. Pickles,Dovi Poznanski,Dovi Poznanski,Gustavo Rahmer,Arne Rau,Wayne Rosing,Michael M. Shara,Roger M. H. Smith,Dan L. Starr,Dan L. Starr,Mark Sullivan,Viswa Velur,Richard Walters,Jeff Zolkower +43 more
TL;DR: The Palomar Transient Factory (PTF) as mentioned in this paper is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky.
Journal ArticleDOI
An X-ray pulsar with a superstrong magnetic field in the soft γ-ray repeater SGR1806 − 20
Chryssa Kouveliotou,Chryssa Kouveliotou,S. Dieters,S. Dieters,Tod E. Strohmayer,Tod E. Strohmayer,J. van Paradijs,Gerald J. Fishman,Charles A. Meegan,Kevin Hurley,Jefferson M. Kommers,Ian Smith,Dale A. Frail,Toshio Murakami +13 more
TL;DR: In this paper, the authors reported the discovery of pulsations in the persistent X-ray flux of SGR1806-20, with a period of 7.47 s and a spindown rate of 2.6 x 10(exp -3) s/yr.
Journal ArticleDOI
Neutron star dynamos and the origins of pulsar magnetism
TL;DR: In this article, it is argued that most of the magnetic energy becomes concentrated in thin flux ropes when the field pressure exceeds the turbulent pressure at the smallest scale of turbulence, and the possibilities for dynamo action during the various (precollapse) stages of convective motion that occur in the evolution of a massive star are examined.
Book ChapterDOI
The High Road to Astronomical Photometric Precision: Differential Photometry
E. F. Milone,J. W. Pel +1 more
TL;DR: Differential photometry offers the most precise method for measuring the brightness of astronomical objects as mentioned in this paper, and it has been used extensively in the application of differential techniques from the earliest visual methods to photoelectric and CCD photometry.
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