Imprints of the jittering jets explosion mechanism in the morphology of the supernova remnant SNR 0540-69.3. (arXiv:2109.10230v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Soker_N/0/1/0/all/0/1">Noam Soker</a> (Technion, Israel)
I identify a point-symmetric structure in recently published velocity maps of
different elements in a plane along the line of sight at the center of the
supernova remnant SNR~0540-69.3, and argue that jittering jets that exploded
this core collapse supernova shaped this point-symmetric structure. The four
pairs of two opposite clumps that compose this point symmetric structure
suggest that two to four pairs of jittering jets shaped the inner ejecta in
this plane. In addition, intensity images of several spectral lines reveal a
faint strip (the main jet-axis) that is part of this plane of jittering jets
and its similarity to morphological features in a few other SNRs and in some
planetary nebulae further suggests shaping by jets. My interpretation implies
that in addition to instabilities, jets also mix elements in the ejecta of core
collapse supernovae. Based on the point-symmetric structure and under the
assumption that jittering jets exploded this supernova, I estimate the
component of the neutron star natal kick velocity on the plane of the sky to be
~235 km/sec, and at an angle of 47 degrees to the direction of the main
jet-axis. I analyse this natal kick direction together with other 12 SNRs in
the frame of the jittering jets explosion mechanism.
I identify a point-symmetric structure in recently published velocity maps of
different elements in a plane along the line of sight at the center of the
supernova remnant SNR~0540-69.3, and argue that jittering jets that exploded
this core collapse supernova shaped this point-symmetric structure. The four
pairs of two opposite clumps that compose this point symmetric structure
suggest that two to four pairs of jittering jets shaped the inner ejecta in
this plane. In addition, intensity images of several spectral lines reveal a
faint strip (the main jet-axis) that is part of this plane of jittering jets
and its similarity to morphological features in a few other SNRs and in some
planetary nebulae further suggests shaping by jets. My interpretation implies
that in addition to instabilities, jets also mix elements in the ejecta of core
collapse supernovae. Based on the point-symmetric structure and under the
assumption that jittering jets exploded this supernova, I estimate the
component of the neutron star natal kick velocity on the plane of the sky to be
~235 km/sec, and at an angle of 47 degrees to the direction of the main
jet-axis. I analyse this natal kick direction together with other 12 SNRs in
the frame of the jittering jets explosion mechanism.
http://arxiv.org/icons/sfx.gif
