Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A
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Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A. / Holland-Ashford, Tyler; Lopez, Laura A.; Auchettl, Katie.
I: Astrophysical Journal, Bind 889, Nr. 2, 144, 01.02.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A
AU - Holland-Ashford, Tyler
AU - Lopez, Laura A.
AU - Auchettl, Katie
PY - 2020/2/1
Y1 - 2020/2/1
N2 - Supernova remnants (SNRs) offer the means to study supernovae (SNe) long after the original explosion and can provide a unique insight into the mechanism that governs these energetic events. In this work, we examine the morphologies of X-ray emission from different elements found in the youngest known core-collapse SNR in the Milky Way, Cassiopeia A. The heaviest elements exhibit the highest levels of asymmetry, which we relate to the burning process that created the elements and their proximity to the center of explosion. Our findings support recent model predictions that the material closest to the source of explosion will reflect the asymmetries inherent to the SN mechanism. Additionally, we find that the heaviest elements are moving more directly opposed to the neutron star (NS) than the lighter elements. This result is consistent with NS kicks arising from ejecta asymmetries.
AB - Supernova remnants (SNRs) offer the means to study supernovae (SNe) long after the original explosion and can provide a unique insight into the mechanism that governs these energetic events. In this work, we examine the morphologies of X-ray emission from different elements found in the youngest known core-collapse SNR in the Milky Way, Cassiopeia A. The heaviest elements exhibit the highest levels of asymmetry, which we relate to the burning process that created the elements and their proximity to the center of explosion. Our findings support recent model predictions that the material closest to the source of explosion will reflect the asymmetries inherent to the SN mechanism. Additionally, we find that the heaviest elements are moving more directly opposed to the neutron star (NS) than the lighter elements. This result is consistent with NS kicks arising from ejecta asymmetries.
KW - CORE-COLLAPSE SUPERNOVAE
KW - RAY-EMITTING EJECTA
KW - 3-DIMENSIONAL STRUCTURE
KW - DYNAMICAL EVOLUTION
KW - GALAXY CLUSTERS
KW - EMISSION
KW - SIMULATIONS
KW - EXPLOSION
KW - ACCELERATION
KW - MORPHOLOGIES
U2 - 10.3847/1538-4357/ab64e4
DO - 10.3847/1538-4357/ab64e4
M3 - Journal article
VL - 889
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 144
ER -
ID: 247168621