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An unusual supernova in the error box of the γ-ray burst of 25 April 1998
We report the discovery of transient optical emission in the error box of the γ-ray burst GRB980425, the light curve of which was very different from that of previous optical afterglows associated with β�-ray bursts. Expand
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An optical supernova associated with the X-ray flash XRF 060218
Long-duration γ-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were notExpand
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An asymmetric explosion as the origin of spectral evolution diversity in type Ia supernovae
Type Ia supernovae form an observationally uniform class of stellar explosions, in that more luminous objects have smaller decline-rates. This one-parameter behaviour allows type Ia supernovae to beExpand
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Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of γ-rays, a gravitational-wave signal, and a transient optical–near-infrared sourceExpand
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SN 2003lw and GRB 031203: A Bright Supernova for a Faint Gamma-Ray Burst
Optical and near-infrared observations of the gamma-ray burst GRB 031203, at z = 0.1055, are reported. A very faint afterglow is detected superposed onto the host galaxy in our first infrared JHKExpand
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The underluminous Type Ia supernova 2005bl and the class of objects similar to SN 1991bg
Optical observations of the Type Ia supernova (SN Ia) 2005bl in NGC 4070, obtained from 6 to +66d with respect to the B-band maximum, are presented. The photometric evolution is characterised byExpand
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The properties of the 'standard' type Ic supernova 1994I from spectral models
The properties of the type Ic supernova SN 1994I are re-investigated. This object is often referred to as a “standard SN Ic” although it exhibited an extremely fast light curve and unusually blueExpand
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The Cow: Discovery of a Luminous, Hot, and Rapidly Evolving Transient
We present the ATLAS discovery and initial analysis of the first 18 days of the unusual transient event, ATLAS18qqn/AT2018cow. It is characterized by a high peak luminosity (~1.7 × 1044 erg s−1),Expand
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High-velocity features in the spectra of the Type Ia supernova SN 1999ee: a property of the explosion or evidence of circumstellar interaction?
The near-maximum spectra of the Type Ia supernova SN 1999ee are reviewed. Two narrow absorption features corresponding to the strongest component of the Ca II infrared (IR) triplet appear in theExpand
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SN 2011dh: Discovery of a Type IIb Supernova from a Compact Progenitor in the Nearby Galaxy M51
On 2011 May 31 UT a supernova (SN) exploded in the nearby galaxy M51 (the Whirlpool Galaxy). We discovered this event using small telescopes equipped with CCD cameras and also detected it with theExpand
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