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- Goddard Space Flight CenterUS163 papers
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13 papers · 1 filter
A New Study of s-Process Nucleosynthesis in Massive Stars
L. -S. The, M. F. El Eid, B. S. Meyer
We present a comprehensive study of s-process nucleosynthesis in 15, 20, 25, and 30 $\msun$ stellar models having solar-like initial composition. The stars are evolved up to igniti…
No Evidence for Gamma-Ray Burst/Abell Cluster or Gamma- Ray Burst/Radio-Quiet Quasar Correlations
K. Hurley, D. H. Hartmann, C. Kouveliotou +4
We examine the recent claims that cosmic gamma-ray bursts are associated with either radio-quiet quasars or Abell clusters. These associations were based on positional coincidences…
Neutrino Capture and r-Process Nucleosynthesis
Bradley S. Meyer, Gail C. McLaughlin, George M. Fuller
We explore neutrino capture during r-process nucleosynthesis in neutrino-driven ejecta from nascent neutron stars. We focus on the interplay between charged-current weak interactio…
The Diffuse Gamma-Ray Background from Supernovae
K. Watanabe, D. H. Hartmann, M. D. Leising +1
The Cosmic Gamma-ray Background (CGB) in the MeV region is believed to be due to photons from radioactivity produced in SNe throughout the history of galaxies in the universe. In p…
On the Association of Gamma-Ray Bursts with Supernovae
R. M. Kippen, M. S. Briggs, J. M. Kommers +7
The recent discovery of a supernova (SN 1998bw) seemingly associated with GRB~980425 adds a new twist to the decades-old debate over the origin of gamma-ray bursts. To investigate…
A Statistical Treatment of the Gamma-Ray Burst "No Host Galaxy" Problem: II. Energies of Standard Candle Bursts
D. L. Band, D. H. Hartmann, B. E. Schaefer
With the discovery that the afterglows after some bursts are coincident with faint galaxies, the search for host galaxies is no longer a test of whether bursts are cosmological, bu…