CaltechAUTHORS
  A Caltech Library Service

Supernovae as the Site of the r-Process: Implications for Gamma-Ray Astronomy

Qian, Y.-Z. and Vogel, P. and Wasserburg, G. J. (1998) Supernovae as the Site of the r-Process: Implications for Gamma-Ray Astronomy. Astrophysical Journal, 506 (2). pp. 868-873. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20131120-101758761

[img]
Preview
PDF - Published Version
See Usage Policy.

219Kb
[img]
Preview
PDF - Submitted Version
See Usage Policy.

129Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20131120-101758761

Abstract

We discuss how detection of gamma-ray emission from the decay of r-process nuclei can improve our understanding of r-process nucleosynthesis. We find that a gamma-ray detector with a sensitivity of ~10^(-7)γ cm^(-2) s^(-1) at E_γ ≈ 100-700 keV may detect the emission from the decay of ^(125)Sb,^(137)Cs,^(144)Ce,^(155)Eu, and ^(194)Os produced in a future Galactic supernova. In addition, such a detector may determine the emission from the decay of ^(126)Sn in the Vela supernova remnant and the diffuse emission from the decay of ^(126)Sn produced by past supernovae in our Galaxy. The required detector sensitivity is similar to what is projected for the proposed Advanced Telescope for High Energy Nuclear Astrophysics (ATHENA). Both the detection of gamma-ray emission from the decay of several r-process nuclei (e.g.,^(125)Sb and ^(194)Os) produced in future Galactic supernovae and the detection of emission from the decay of ^(126)Sn in the Vela supernova remnant would prove that supernovae are a site of the r-process. Furthermore, the former detection would allow us to determine whether or not the r-process nuclei are produced in relative proportions specified by the solar r-process abundance pattern in supernova r-process events. Finally, detection of diffuse emission from the decay of ^(126)Sn in our Galaxy would eliminate neutron star-neutron star mergers as the main source for the r-process nuclei near mass number A ~ 126.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/306285DOIArticle
http://iopscience.iop.org/0004-637X/506/2/868/PublisherArticle
http://arxiv.org/abs/astro-ph/9803300arXivDiscussion Paper
ORCID:
AuthorORCID
Vogel, P.0000-0003-0587-5466
Wasserburg, G. J.0000-0002-7957-8029
Additional Information:© 1998 American Astronomical Society. Received 1998 March 24; accepted 1998 May 28. We want to thank John Beacom for helping us search the Table of Isotopes, and Steve Boggs, Fiona Harrison, Tom Prince, Roberto Gallino, and Stan Woosley for discussions. This work was supported in part by the US Department of Energy under grant DE-FG03-88ER-40397, by NASA under grant NAG 5-4076, and by Division Contribution 8512(992). Y.-Z. Q. was supported by the David W. Morrisroe Fellowship at Caltech.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-88ER-40397
NASANAG5-4076
David W. Morrisroe FellowshipUNSPECIFIED
Subject Keywords: gamma rays: theory; nuclear reactions, nucleosynthesis, abundances; supernovae: general
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences8512
Lunatic Asylum Lab992
Issue or Number:2
Record Number:CaltechAUTHORS:20131120-101758761
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131120-101758761
Official Citation:Supernovae as the Site of the r-Process: Implications for Gamma-Ray Astronomy Y.-Z. Qian et al. 1998 ApJ 506 868
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42586
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 Nov 2013 21:11
Last Modified:09 Mar 2020 13:19

Repository Staff Only: item control page