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Late-time HST and JWST Observations of GRB 221009A: Evidence for a Break in the Light Curve at 50 Days

GRB 221009A is one of the brightest transients ever observed with the highest peak gamma-ray flux for a gamma-ray burst (GRB). A type Ic-BL supernova (SN), SN 2022xiw, was definitively detected in late-time JWST spectroscopy (t = 195 days,…

High Energy Astrophysical Phenomena · Physics 2025-03-27 Huei Sears , Ryan Chornock , Peter Blanchard , Raffaella Margutti , V. Ashley Villar , Justin Pierel , Patrick J. Vallely , Kate D. Alexander , Edo Berger , Tarraneh Eftekhari , Wynn V. Jacobson-Galan , Tanmoy Laskar , Natalie LeBaron , Brian D. Metzger , Dan Milisavljevic

A tale of two GRB-SNe at a common redshift of z = 0.54

We present ground-based and HST optical observations of the optical transients (OTs) of long-duration Gamma Ray Bursts (GRBs) 060729 and 090618, both at a redshift of z = 0.54. For GRB 060729, bumps are seen in the optical light curves…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Z. Cano , D. Bersier , C. Guidorzi , R. Margutti , K. M Svensson , S. Kobayashi , A. Melandri , K. Wiersema , A. Pozanenko , A. J. van der Horst , G. G. Pooley , A. Fernandez-Soto , A. J. Castro-Tirado , A. de Ugarte Postigo , M. Im , A. P. Kamble , D. Sahu , J. Alonso-Lorite , G. Anupama , J. L. Bibby , M. J. Burgdorf , N. Clay , P. A. Curran , T. A. Fatkhullin , A. S. Fruchter , P. Garnavich , A. Gomboc , J. Gorosabel , J. F. Graham , U. Gurugubelli , J. Haislip , K. Huang , A. Huxor , M. Ibrahimov , Y. Jeon , Y-B. Jeon , K. Ivarsen , D. Kasen , E. Klunko , C. Kouveliotou , A. LaCluyze , A. J. Levan , V. Loznikov , P. A. Mazzali , A. S. Moskvitin , C. Mottram , C. G. Mundell , P. E. Nugent , M. Nysewander , P. T. O'Brien , W. -K. Park , V. Peris , E. Pian , D. Reichart , J. E. Rhoads , E. Rol , V. Rumyantsev , V. Scowcroft , D. Shakhovskoy , E. Small , R. J. Smith , V. V. Sokolov , R. L. C. Starling , I. Steele , R. G. Strom , N. R. Tanvir , Y. Tsapras , Y. Urata , O. Vaduvescu , A. Volnova , A. Volvach , R. A. M. J. Wijers , S. E. Woosley , D. R. Young

SN 1998bw/GRB 980425: Hypernova or Aspherical Explosion?

The recent discovery of the unusual supernova SN1998bw and its apparent correlation with the gamma-ray burst GRB 980425 has raised new issues concerning both the GRB and SNe. SN1998bw was unusually bright at maximum light and expansion…

Astrophysics · Physics 2007-05-23 P. Hoeflich , J. C. Wheeler , L. Wang

Optical Bumps in Cosmological GRBs as Supernovae

From both photometric and broadband spectral monitoring of gamma-ray burst (GRB) lightcurve ``bumps,'' particularly in GRB 011121, a strong case grew for a supernova (SN) origin. The GRB-SN connection was finally solidified beyond a…

Astrophysics · Physics 2015-06-24 J. S. Bloom

Early-Time Photometry and Spectroscopy of the Fast Evolving SN 2006AJ Associated with GRB 060218

We present early photometric and spectroscopic data on the afterglow of GRB 060218 and report the evolution of the underlying supernova 2006aj. Our data span a time-range of 4 days to 22 days after the GRB and clearly establish that SN…

Astrophysics · Physics 2009-11-11 M. Modjaz , K. Z. Stanek , P. M. Garnavich , P. Berlind , S. Blondin , W. Brown , M. Calkins , P. Challis , A. M. Diamond-Stanic , H. Hao , M. Hicken , R. P. Kirshner , J. L. Prieto

Spectral Evolution of the Peculiar Ic Supernova 1998bw

SN 1998bw holds the record for the most energetic Type Ic explosion, one of the brightest radio supenovae and probably the first supernova associated with a gamma-ray burst. In this paper we present spectral observations of SN 1998bw…

Astrophysics · Physics 2009-10-31 R. A. Stathakis , B. J. Boyle , D. H. Jones , M. S. Bessell , T. J. Galama , Lisa M. Germany , M. Hartley , D. M. James , C. Kouveliotou , I. J. Lewis , Q. A. Parker , K. S. Russell , E. M. Sadler , C. G. Tinney , J. van Paradijs , P. M. Vreeswijk

The unusual afterglow of GRB 980326: evidence for the gamma-ray burst/supernova connection

Cosmic gamma-ray bursts (GRBs) have been firmly established as one of the most powerful phenomena in the Universe, releasing electromagnetic energy approaching the rest-mass energy of a neutron star in a few seconds. The two currently…

Astrophysics · Physics 2008-11-26 J. S. Bloom , S. R. Kulkarni , S. G. Djorgovski , A. C. Eichelberger , P. Cote , J. P. Blakeslee , S. C. Odewahn , F. A. Harrison , D. A. Frail , A. V. Filippenko , D. C. Leonard , A. G. Riess , H. Spinrad , D. Stern , A. Bunker , A. Dey , S. A. Stanford , B. Grossan , S. Perlmutter , R. A. Knop , I. M. Hook , M. Feroci

The Variable Light Curve of GRB 030329: The Case for Refreshed Shocks

GRB 030329 is unique in many aspects. It has a very low redshift for a GRB, $z=0.1685$, and is therefore very bright and easy to monitor, making it the most well studied afterglow to date. It shows a supernova bump in the light curve, with…

Astrophysics · Physics 2009-11-07 Jonathan Granot , Ehud Nakar , Tsvi Piran

SN 2002cv: A Heavily Obscured Type Ia Supernova

We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN) 2002cv, located in NGC 3190, which is also the parent galaxy of the Type Ia SN 2002bo. SN 2002cv, not visible in…

Astrophysics · Physics 2009-11-13 N. Elias-Rosa , S. Benetti , M. Turatto , E. Cappellaro , S. Valenti , A. A. Arkharov , J. E. Beckman , A. Di Paola , M. Dolci , A. V. Filippenko , R. J. Foley , K. Krisciunas , V. M. Larionov , W. Li , W. P. S. Meikle , A. Pastorello , G. Valentini , W. Hillebrandt

The broad line type Ic supernova SN 2007ru: Adding to the diversity of type Ic supernovae

Photometric and spectral evolution of the Type Ic supernova SN 2007ru until around 210 days after maximum are presented. The spectra show broad spectral features due to very high expansion velocity, normally seen in hypernovae. The…

Astrophysics · Physics 2011-02-11 D. K. Sahu , Masaomi Tanaka , G. C. Anupama , Uday K. Gurugubelli , Ken'ichi Nomoto

Detection of a supernova signature associated with GRB 011121

Using observations from an extensive monitoring campaign with the Hubble Space Telescope we present the detection of an intermediate-time flux excess which is redder in color relative to the afterglow of GRB 011121, currently distinguished…

Astrophysics · Physics 2010-05-12 J. S. Bloom , S. R. Kulkarni , P. A. Price , D. Reichart , T. J. Galama , B. P. Schmidt , D. A. Frail , E. Berger , P. J. McCarthy , R. A. Chevalier , J. C. Wheeler , J. P. Halpern , D. W. Fox , S. G. Djorgovski , F. A. Harrison , R. Sari , T. S. Axelrod , R. A. Kimble , J. Holtzman , K. Hurley , F. Frontera , L. Piro , E. Costa

SN 2005at - A neglected type Ic supernova at 10 Mpc

We present a photometric and spectroscopic study of a reddened type Ic supernova (SN) 2005at. We report our results based on the available data of SN 2005at, including late-time observations from the Spitzer Space Telescope and the Hubble…

Solar and Stellar Astrophysics · Physics 2014-12-04 E. Kankare , M. Fraser , S. Ryder , C. Romero-Canizales , S. Mattila , R. Kotak , P. Laursen , L. A. G. Monard , M. Salvo , P. Vaisanen

GRB 221009A/SN 2022xiw: A Supernova Obscured by a Gamma-Ray Burst Afterglow?

We present optical photometry for the afterglow of GRB 221009A, in some respects the most extraordinary gamma-ray burst (GRB) ever observed. Good quality in the R-band light curve is obtained, covering 0.32-19.57 days since the Fermi-GBM…

High Energy Astrophysical Phenomena · Physics 2024-07-02 De-Feng Kong , Xiang-Gao Wang , WeiKang Zheng , Hou-Jun Lü , L. P. Xin , Da-Bin Lin , Jia-Xin Cao , Ming-Xuan Lu , B. Ren , Edgar P. Vidal , J. Y. Wei , En-Wei Liang , Alexei V. Filippenko

The Anticipated Supernova Associated with GRB090618

We use the cannonball model of gamma ray bursts (GRBs) and public data from the first day of observations of GRB 090618 to predict its X-ray and optical lightcurves until very late times, and, in particular, the emergence of a photometric…

High Energy Astrophysical Phenomena · Physics 2015-05-13 Shlomo Dado , Arnon Dar

The supernova associated with GRB 020405

We use the very simple and successful Cannonball (CB) model of gamma ray bursts (GRBs) and their afterglows (AGs) to analyze the observations of the mildly extinct optical AG of the relatively nearby GRB 020405. We show that GRB 020405 was…

Astrophysics · Physics 2009-11-07 Shlomo Dado , Arnon Dar , Alvaro De Rujula

GRB 011121: A Massive Star Progenitor

Of the cosmological gamma-ray bursts, GRB 011121 has the lowest redshift, z=0.36. More importantly, the multi-color excess in the afterglow detected in the Hubble Space Telescope (HST) light curves is compelling observational evidence for…

Astrophysics · Physics 2009-11-07 P. A. Price , E. Berger , D. E. Reichart , S. R. Kulkarni , R. Subrahmanyan , R. M. Wark , M. H. Wieringa , D. A. Frail , J. Bailey , B. Boyle , E. Corbett , K. Gunn , S. D. Ryder , N. Seymour , K. Koviak , P. McCarthy , M. Phillips , T. S. Axelrod , J. S. Bloom , S. G. Djorgovski , D. W. Fox , T. J. Galama , F. A. Harrison , K. Hurley , R. Sari , B. P. Schmidt , S. A. Yost , M. J. I. Brown , T. Cline , F. Frontera , C. Guidorzi , E. Montanari

On the maximum luminosities of normal stripped-envelope supernovae -- brighter than explosion models allow

Stripped-envelope supernovae (SE SNe) of Type Ib and Type Ic are thought to result from explosions of massive stars having lost their outer envelopes. The favoured explosion mechanism is by core-collapse, with the shock later revived by…

Solar and Stellar Astrophysics · Physics 2022-01-12 J. Sollerman , S. Yang , D. Perley , S. Schulze , C. Fremling , M. Kasliwal , K. Shin , B. Racine

Photometry of SN 2002ic and Implications for the Progenitor Mass-Loss History

We present new pre-maximum and late-time optical photometry of the Type Ia/IIn supernova 2002ic. These observations are combined with the published V-band magnitudes of Hamuy et al. (2003) and the VLT spectrophotometry of Wang et al. (2004)…

Astrophysics · Physics 2009-11-10 W. M. Wood-Vasey , L. Wang , G. Aldering

Highly Luminous Supernovae associated with Gamma-Ray Bursts I.: GRB 111209A/SN 2011kl in the Context of Stripped-Envelope and Superluminous Supernovae

GRB 111209A, one of the longest Gamma-Ray Bursts (GRBs) ever observed, is linked to SN 2011kl, the most luminous GRB-Supernova (SN) detected so far, which shows evidence for being powered by a magnetar central engine. We place SN 2011kl…

High Energy Astrophysical Phenomena · Physics 2019-05-01 D. A. Kann , P. Schady , F. E. Olivares , S. Klose , A. Rossi , D. A. Perley , T. Krühler , J. Greiner , A. Nicuesa Guelbenzu , J. Elliott , F. Knust , R. Filgas , E. Pian , P. Mazzali , J. P. U. Fynbo , G. Leloudas , P. M. J. Afonso , C. Delvaux , J. F. Graham , A. Rau , S. Schmidl , S. Schulze , M. Tanga , A. C. Updike , K. Varela

The gamma-ray burst of 980425 and its association with the extraordinary radio emission from a most unusual supernova

Supernova SN 1998bw exploded in the same direction and at the same time as the gamma-ray burst GRB 980425. Here we report radio observations of this type Ic supernova, beginning 4 days after the gamma-ray burst. At its peak the radio source…

Astrophysics · Physics 2007-05-23 S. R. Kulkarni , D. A. Frail , M. H. Wieringa , R. D. Ekers , E. M. Sadler , R. M. Wark , J. L. Higdon , E. S. Phinney , J. S. Bloom