Measurements of Ω and Λ from 42 High-Redshift Supernovae
- S. Perlmutter, G. Aldering, The Supernova Cosmology Project
- Physics
- 1 December 1998
We report measurements of the mass density, ΩM, and cosmological-constant energy density, ΩΛ, of the universe based on the analysis of 42 type Ia supernovae discovered by the Supernova Cosmology…
SPECTRA AND HUBBLE SPACE TELESCOPE LIGHT CURVES OF SIX TYPE Ia SUPERNOVAE AT 0.511 < z < 1.12 AND THE UNION2 COMPILATION
- R. Amanullah, C. Lidman, N. Yasuda
- Physics
- 10 April 2010
We report on work to increase the number of well-measured Type Ia supernovae (SNe Ia) at high redshifts. Light curves, including high signal-to-noise Hubble Space Telescope data, and spectra of six…
Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
- M. Kowalski, D. Rubin, J. Yun
- Physics
- 25 April 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 these heterogeneous compilations. This…
Electromagnetic counterparts of compact object mergers powered by the radioactive decay of r‐process nuclei
- B. Metzger, G. Martínez-Pinedo, N. Zinner
- Physics
- 28 January 2010
The most promising astrophysical sources of kHz gravitational waves (GWs) are the inspiral and merger of binary neutron star(NS)/black hole systems. Maximizing the scientific return of a GW detection…
The Palomar Transient Factory: System Overview, Performance, and First Results
- N. Law, S. Kulkarni, J. Zolkower
- Physics
- 30 June 2009
The Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The transient survey is performed using a new 8.1 square…
The Farthest Known Supernova: Support for an Accelerating Universe and a Glimpse of the Epoch of Deceleration
- A. Riess, P. Nugent, S. Veilleux
- Physics
- 1 April 2001
We present photometric observations of an apparent Type Ia supernova (SN Ia) at a redshift of ~1.7, the farthest SN observed to date. The supernova, SN 1997ff, was discovered in a repeat observation…
An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy
Multiwavelength observations of a unique γ-ray–selected transient detected by the Swift satellite, accompanied by bright emission across the electromagnetic spectrum, and whose properties are unlike any previously observed source are presented.
Dark Energy Survey year 1 results: Cosmological constraints from galaxy clustering and weak lensing
- D. Abbott, F. Abdalla, J. Zuntz
- PhysicsPhysical Review D
- 4 August 2017
We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg2 of griz imaging data from the first year of the Dark Energy Survey (DES…
Hydrogen-poor superluminous stellar explosions
- R. Quimby, S. Kulkarni, D. Levitan
- PhysicsNature
- 1 October 2009
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.
Long γ-ray bursts and core-collapse supernovae have different environments
- A. Fruchter, A. Levan, S. Woosley
- PhysicsNature
- 20 March 2006
When massive stars exhaust their fuel, they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even…
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