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Title: 60Fe in core-collapse supernovae and prospects for X-ray and γ-ray detection in supernova remnants

Abstract

We investigate 60Fe in massive stars and core-collapse supernovae focussing on uncertainties that influence its production in 15, 20 and 25 M stars at solar metallicity. We find that the 60Fe yield is a monotonic increasing function of the uncertain 59Fe(n, γ)6 0Fe cross section and that a factor of 10 reduction in the reaction rate results in a factor 8–10 reduction in the 60Fe yield; while a factor of 10 increase in the rate increases the yield by a factor 4–7. We find that none of the 189 simulations we have performed are consistent with a core-collapse supernova triggering the formation of the Solar System, and that only models using 59Fe(n, γ)60Fe cross section that is less than or equal to that from NON-SMOKER can reproduce the observed 60Fe/ 26Al line flux ratio in the diffuse ISM. We examine the prospects of detecting old core-collapse supernova remnants (SNRs) in the Milky Way from their γ-ray emission from the decay of 60Fe, finding that the next generation of gamma-ray missions could be able to discover up to ~100 such old SNRs as well as measure the 60Fe yields of a handful of known Galactic SNRs. We also predict themore » X-ray spectrum that is produced by atomic transitions in 60Co following its ionization by internal conversion and give theoretical X-ray line fluxes as a function of remnant age as well as the Doppler and fine-structure line broadening effects. The X-ray emission presents an interesting prospect for addressing the missing SNR problem with future X-ray missions.« less

Authors:
ORCiD logo [1];  [2];  [1];  [1];  [3];  [1];  [1];  [1];  [4]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik; GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
  4. Univ. of Manitoba, Winnipeg, MB (Canada). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1504284
Alternate Identifier(s):
OSTI ID: 1499350; OSTI ID: 1503712; OSTI ID: 1513139
Report Number(s):
LA-UR-18-24048; LLNL-JRNL-763787
Journal ID: ISSN 0035-8711
Grant/Contract Number:  
89233218CNA000001; AC52-07NA27344
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 485; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; nuclear reactions; nucleosynthesis; abundances; stars: abundances; massive; supernovae: general; gamma-rays: stars

Citation Formats

Jones, Samuel W., Möller, Heiko, Fryer, Chris L., Fontes, Christopher J., Trappitsch, Reto, Even, Wesley P., Couture, Aaron, Mumpower, Matthew R., and Safi-Harb, Samar. 60Fe in core-collapse supernovae and prospects for X-ray and γ-ray detection in supernova remnants. United States: N. p., 2019. Web. doi:10.1093/mnras/stz536.
Jones, Samuel W., Möller, Heiko, Fryer, Chris L., Fontes, Christopher J., Trappitsch, Reto, Even, Wesley P., Couture, Aaron, Mumpower, Matthew R., & Safi-Harb, Samar. 60Fe in core-collapse supernovae and prospects for X-ray and γ-ray detection in supernova remnants. United States. doi:10.1093/mnras/stz536.
Jones, Samuel W., Möller, Heiko, Fryer, Chris L., Fontes, Christopher J., Trappitsch, Reto, Even, Wesley P., Couture, Aaron, Mumpower, Matthew R., and Safi-Harb, Samar. Fri . "60Fe in core-collapse supernovae and prospects for X-ray and γ-ray detection in supernova remnants". United States. doi:10.1093/mnras/stz536.
@article{osti_1504284,
title = {60Fe in core-collapse supernovae and prospects for X-ray and γ-ray detection in supernova remnants},
author = {Jones, Samuel W. and Möller, Heiko and Fryer, Chris L. and Fontes, Christopher J. and Trappitsch, Reto and Even, Wesley P. and Couture, Aaron and Mumpower, Matthew R. and Safi-Harb, Samar},
abstractNote = {We investigate 60Fe in massive stars and core-collapse supernovae focussing on uncertainties that influence its production in 15, 20 and 25 M⊙ stars at solar metallicity. We find that the 60Fe yield is a monotonic increasing function of the uncertain 59Fe(n, γ)60Fe cross section and that a factor of 10 reduction in the reaction rate results in a factor 8–10 reduction in the 60Fe yield; while a factor of 10 increase in the rate increases the yield by a factor 4–7. We find that none of the 189 simulations we have performed are consistent with a core-collapse supernova triggering the formation of the Solar System, and that only models using 59Fe(n, γ)60Fe cross section that is less than or equal to that from NON-SMOKER can reproduce the observed 60Fe/26Al line flux ratio in the diffuse ISM. We examine the prospects of detecting old core-collapse supernova remnants (SNRs) in the Milky Way from their γ-ray emission from the decay of 60Fe, finding that the next generation of gamma-ray missions could be able to discover up to ~100 such old SNRs as well as measure the 60Fe yields of a handful of known Galactic SNRs. We also predict the X-ray spectrum that is produced by atomic transitions in 60Co following its ionization by internal conversion and give theoretical X-ray line fluxes as a function of remnant age as well as the Doppler and fine-structure line broadening effects. The X-ray emission presents an interesting prospect for addressing the missing SNR problem with future X-ray missions.},
doi = {10.1093/mnras/stz536},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 485,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1093/mnras/stz536

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