Title: The Nucleosynthetic Yields of Core-collapse Supernovae: Prospects for the Next Generation of Gamma-Ray Astronomy

Abstract

Though the neutrino-driven convection model for the core-collapse explosion mechanism has received strong support in recent years, there are still many uncertainties in the explosion parameters—such as explosion energy, remnant mass, and end-of-life stellar abundances as initial conditions. Using a broad set of spherically symmetric core-collapse simulations we examine the effects of these key parameters on explosive nucleosynthesis and final explosion yields. The post-bounce temperature and density evolution of zero-age main-sequence 15, 20, and 25 solar mass progenitors are post-processed through the Nucleosynthesis Grid nuclear network to obtain detailed explosive yields. In particular, this study focuses on radio isotopes that are of particular interest to the next generation of gamma-ray astronomical observations: ⁴³K, ⁴⁷Ca, ⁴⁴Sc, ⁴⁷Sc, ⁴⁸V, ⁴⁸Cr, ⁵¹Cr, ⁵²Mn, ⁵⁹Fe, ⁵⁶Co, ⁵⁷Co, and ⁵⁷Ni. Furthermore, these nuclides may be key in advancing our understanding of the inner workings of core-collapse supernovae by probing the parameters of the explosion engine. We find that the isotopes that are strong indicators of explosion energy are ⁴³K, ⁴⁷Ca, ⁴⁴Sc, ⁴⁷Sc, and ⁵⁹Fe, those that are dependent on the progenitor structure are ⁴⁸V, ⁵¹Cr, and ⁵⁷Co, and those that probe neither are ⁴⁸Cr, ⁵²Mn, ⁵⁷Ni, and ⁵⁶Co. We discuss the prospects of observing thesemore » radionuclides in supernova remnants.« less

Authors:

Andrews, S. ^[1]; Fryer, C.  ^[2];

• Search DOE PAGES for author "Fryer, C."
• Search DOE PAGES for ORCID "0000-0003-2624-0056"

Even, W.  ^[3];

• Search DOE PAGES for author "Even, W."
• Search DOE PAGES for ORCID "0000-0002-5412-3618"

Jones, S.  ^[4];

• Search DOE PAGES for author "Jones, S."
• Search DOE PAGES for ORCID "0000-0003-3970-1843"

Pignatari, M.  ^[5]

• Search DOE PAGES for author "Pignatari, M."
• Search DOE PAGES for ORCID "0000-0002-9048-6010"

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+ Show Author Affiliations

1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Theoretical Astrophysics; Stony Brook Univ., NY (United States)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Theoretical Astrophysics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Theoretical Astrophysics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Southern Utah Univ., Cedar City, UT (United States)
4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Center for Theoretical Astrophysics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
5. Univ. of Hull (United Kingdom); Hungarian Academy of Sciences, Budapest (Hungary). Konkoly Observatory, Research Centre for Astronomy and Earth Sciences; Joint Inst. for Nuclear Astrophysics (JINA), East Lansing, MI (United States). Center for the Evolution of the Elements (JINA-CEE); NuGrid Collaboration

Publication Date:

Mon Feb 10 00:00:00 EST 2020

Research Org.:

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); National Institutes of Health (NIH); STFC

OSTI Identifier:

1819142

Report Number(s):

LA-UR-19-30411
Journal ID: ISSN 1538-4357; TRN: US2214066

Grant/Contract Number:  

89233218CNA000001; PHY-1607611; PHY-1748958; R25GM067110; PHY-1430152; ST/R000840/1

Resource Type:

Accepted Manuscript

Journal Name:

The Astrophysical Journal (Online)

Additional Journal Information:

Journal Name: The Astrophysical Journal (Online); Journal Volume: 890; Journal Issue: 1; Journal ID: ISSN 1538-4357

Publisher:

IOP Publishing

Country of Publication:

United States

Language:

English

Subject:

79 ASTRONOMY AND ASTROPHYSICS; nucleosynthesis; supernovae; gamma ray