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Unravelling the asphericities in the explosion and multi-faceted circumstellar matter of SN 2023ixf by Singh, Avinash; Teja, R. S.; Moriya, T. J.; Maeda, K.; Kawabata, K. S.; Tanaka, M.; Imazawa, R.; Nakaoka, T.; Gangopadhyay, A.; Yamanaka, M.; Swain, V.; Sahu, D. K.; Anupama, G. C.; Kumar, B.; Anche, R. M.; Sano, Y.; Raj, A.; Agnihotri, V. K.; Bhalerao, V.; Bisht, D.; Bisht, M. S.; Belwal, K.; Chakrabarti, S. K.; Fujii, M.; Nagayama, T.; Matsumoto, K.; Hamada, T.; Kawabata, M.; Kumar, A.; Kumar, R.; Malkan, B. K.; Smith, P.; Sakagami, Y.; Taguchi, K.; Tominaga, N.; Watanabe, A. is a scholarly article available to read on EtoBox.

What is Unravelling the asphericities in the explosion and multi-faceted circumstellar matter of SN 2023ixf about?

We present a detailed investigation of photometric, spectroscopic, and polarimetric observations of the Type II SN 2023ixf. Earlier studies have provided compelling evidence for a delayed shock breakout from a confined dense circumstellar matter (CSM) enveloping the progenitor star. The temporal evolution of polarization in SN~2023ixf revealed three distinct peaks in polarization evolution at 1.4 d, 6.4 d, and 79.2 d, indicating an asymmetric dense CSM, an aspherical shock front and clumpiness in the low-density extended CSM, and an aspherical inner ejecta/He-core. SN 2023ixf displayed two dominant axes, one along the CSM-outer ejecta and the other along the inner ejecta/He-core, showcasing the independent origin of asymmetry in the early and late evolution. The argument for an aspherical shock front is further strengthened by the presence of a high-velocity broad absorption feature in the blue wing of the Balmer features in addition to the P-Cygni absorption post 16 d. Hydrodynamical light curve modeling indicated a progenitor of 10 solar mass with a radius of 470 solar radii and explosion energy of 2e51 erg, along with 0.06 solar mass of 56-Ni, though these properties are not uni

Author

Singh, Avinash; Teja, R. S.; Moriya, T. J.; Maeda, K.; Kawabata, K. S.; Tanaka, M.; Imazawa, R.; Nakaoka, T.; Gangopadhyay, A.; Yamanaka, M.; Swain, V.; Sahu, D. K.; Anupama, G. C.; Kumar, B.; Anche, R. M.; Sano, Y.; Raj, A.; Agnihotri, V. K.; Bhalerao, V.; Bisht, D.; Bisht, M. S.; Belwal, K.; Chakrabarti, S. K.; Fujii, M.; Nagayama, T.; Matsumoto, K.; Hamada, T.; Kawabata, M.; Kumar, A.; Kumar, R.; Malkan, B. K.; Smith, P.; Sakagami, Y.; Taguchi, K.; Tominaga, N.; Watanabe, A.

Published

2024

Language

EN