Search Results - "Challis, P. J."
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The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample
Published in The Astrophysical journal (01-06-2018)“…We present optical light curves, redshifts, and classifications for spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1)…”
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Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters
Published in The Astrophysical journal (10-04-2018)“…We use 1169 Pan-STARRS supernovae (SNe) and 195 low-z (z < 0.1) SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic…”
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3
TYPE Iax SUPERNOVAE: A NEW CLASS OF STELLAR EXPLOSION
Published in The Astrophysical journal (10-04-2013)“…We describe observed properties of the Type Iax class of supernovae (SNe Iax), consisting of SNe observationally similar to its prototypical member, SN 2002cx…”
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4
An ultraviolet–optical flare from the tidal disruption of a helium-rich stellar core
Published in Nature (London) (10-05-2012)“…The observation of a flare of radiation from the centre of an inactive galaxy fits a model of the tidal disruption of a helium-rich stellar core and its…”
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Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-collapse Supernova Contamination
Published in The Astrophysical journal (01-07-2017)“…The Pan-STARRS (PS1) Medium Deep Survey discovered over 5000 likely supernovae (SNe) but obtained spectral classifications for just 10% of its SN candidates…”
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Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
Published in The Astrophysical journal (20-10-2008)“…We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with…”
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Very Early Ultraviolet and Optical Observations of the Type Ia Supernova 2009ig
Published in The Astrophysical journal (01-01-2012)“…Supernova (SN) 2009ig was discovered 17 hr after explosion by the Lick Observatory Supernova Search, promptly classified as a normal Type Ia SN (SN Ia), peaked…”
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GALEX Spectroscopy of SN 2005ay Suggests Ultraviolet Spectral Uniformity among Type II-P Supernovae
Published in The Astrophysical journal (01-10-2008)Get full text
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TYPE Iax SUPERNOVAE: A NEW CLASS OF STELLAR EXPLOSION
Published in The Astrophysical journal (25-03-2013)Get full text
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New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy
Published in The Astrophysical journal (10-04-2007)“…We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over…”
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The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
Published 26-03-2018“…We present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1…”
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Journal Article -
12
Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters
Published 14-03-2018“…We use 1169 Pan-STARRS supernovae (SNe) and 195 low-$z$ ($z < 0.1$) SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic…”
Get full text
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13
Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-Collapse Supernova Contamination
Published 19-06-2017“…The Pan-STARRS (PS1) Medium Deep Survey discovered over 5,000 likely supernovae (SNe) but obtained spectral classifications for just 10% of its SN candidates…”
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14
Type Iax Supernovae: A New Class of Stellar Explosion
Published 04-02-2013“…We describe observed properties of the Type Iax class of supernovae (SNe Iax), consisting of SNe observationally similar to its prototypical member, SN 2002cx…”
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15
Ultra-Luminous Supernovae as a New Probe of the Interstellar Medium in Distant Galaxies
Published 18-06-2012“…We present the Pan-STARRS1 discovery and light curves, and follow-up MMT and Gemini spectroscopy of an ultra-luminous supernova (ULSN; dubbed PS1-11bam) at a…”
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Very Early Ultraviolet and Optical Observations of the Type Ia Supernova 2009ig
Published 01-11-2011“…Supernova (SN) 2009ig was discovered 17 hours after explosion by the Lick Observatory Supernova Search, promptly classified as a normal Type Ia SN (SN Ia),…”
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17
An ultraviolet-optical flare from the tidal disruption of a helium-rich stellar core
Published 01-05-2012“…The flare of radiation from the tidal disruption and accretion of a star can be used as a marker for supermassive black holes that otherwise lie dormant and…”
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ULTRALUMINOUS SUPERNOVAE AS A NEW PROBE OF THE INTERSTELLAR MEDIUM IN DISTANT GALAXIES
Published in The Astrophysical journal (2012)Get full text
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VERY EARLY ULTRAVIOLET AND OPTICAL OBSERVATIONS OF THE TYPE Ia SUPERNOVA 2009ig
Published in The Astrophysical journal (2011)Get full text
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20
GALEX Spectroscopy of SN 2005ay suggests a UV spectral uniformity among type II-P supernovae
Published 24-06-2008“…We present the first results from our GALEX program designed to obtain ultraviolet (UV) spectroscopy of nearby core-collapse supernovae (SNe). Our first…”
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