Staff View: :: Library Catalog

Saved in:

Bibliographic Details
Main Authors:	Brennan, S. J., Barmentloo, S., Schulze, S., Smith, K. W., Hirai, R., Eldridge, J. J., Fraser, M., Stevance, H. F., Smartt, S. J., Anand, S., Aryan, A., Chen, T. -W., Das, K. K., Drake, A. J., Fransson, C., Gangopadhyay, A., Gkini, A., Jacobson-Galán, W. V., Jerkstrand, A., Johansson, J., Nicholl, M., Pignata, G., Sarin, N., Singh, A., Sollerman, J., Srivastav, S., van Baal, B. F. A., Chambers, K. C., Coughlin, M. W., Gao, H., Graham, M. J., Huber, M. E., Lin, C. -C., Lowe, T. B., Magnier, E. A., Masci, F. J., Purdum, J., Rest, A., Rusholme, B., Smith, R., Smith, I. A., Tweddle, J. W., Wainscoat, R. J., de Boer, T.
Format:	Preprint
Published:	2025
Subjects:	High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
Online Access:	https://arxiv.org/abs/2503.08768
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1866910896029171712
author	Brennan, S. J. Barmentloo, S. Schulze, S. Smith, K. W. Hirai, R. Eldridge, J. J. Fraser, M. Stevance, H. F. Smartt, S. J. Anand, S. Aryan, A. Chen, T. -W. Das, K. K. Drake, A. J. Fransson, C. Gangopadhyay, A. Gkini, A. Jacobson-Galán, W. V. Jerkstrand, A. Johansson, J. Nicholl, M. Pignata, G. Sarin, N. Singh, A. Sollerman, J. Srivastav, S. van Baal, B. F. A. Chambers, K. C. Coughlin, M. W. Gao, H. Graham, M. J. Huber, M. E. Lin, C. -C. Lowe, T. B. Magnier, E. A. Masci, F. J. Purdum, J. Rest, A. Rusholme, B. Smith, R. Smith, I. A. Tweddle, J. W. Wainscoat, R. J. de Boer, T.
author_facet	Brennan, S. J. Barmentloo, S. Schulze, S. Smith, K. W. Hirai, R. Eldridge, J. J. Fraser, M. Stevance, H. F. Smartt, S. J. Anand, S. Aryan, A. Chen, T. -W. Das, K. K. Drake, A. J. Fransson, C. Gangopadhyay, A. Gkini, A. Jacobson-Galán, W. V. Jerkstrand, A. Johansson, J. Nicholl, M. Pignata, G. Sarin, N. Singh, A. Sollerman, J. Srivastav, S. van Baal, B. F. A. Chambers, K. C. Coughlin, M. W. Gao, H. Graham, M. J. Huber, M. E. Lin, C. -C. Lowe, T. B. Magnier, E. A. Masci, F. J. Purdum, J. Rest, A. Rusholme, B. Smith, R. Smith, I. A. Tweddle, J. W. Wainscoat, R. J. de Boer, T.
contents	Over the past two decades, an increasing number of transients have shown luminous activity at their explosion sites weeks to years before an interacting supernova (SN) is observed. For some objects, this pre-SN activity is typically linked to large-scale mass-loss events preceding core collapse, yet its triggering mechanism and the underlying explosion process remain uncertain. We present SN 2022mop, which was initially observed in August 2022, exhibiting nebular emission, including [O I], Mg I], and [Ca II], resembling the late-time (~200 days post-explosion) spectrum of a stripped-envelope SN (SESN) from a progenitor with M[ZAMS] < 18 Msun. SN 2022mop shows strong (~ 1 mag) repeating undulations in its light curve, suggesting late-time interaction. In mid-2024, the transient re-brightened for several months before a Type IIn SN (r[peak] = -18.2 mag) was observed in December 2024, closely resembling the evolution of SN 2009ip. By triangulating both transients using Pan-STARRS images, we determine that both transients are coincident within approximately 3 parsecs. Given the environment, the chance alignment of two isolated SNe is unlikely. We propose a merger-burst scenario: a compact object formed in 2022, is kicked into an eccentric orbit, interacts with its hydrogen-rich companion over subsequent months, and ultimately merges, triggering a Type IIn SN-like transient.
format	Preprint
id	arxiv_https___arxiv_org_abs_2503_08768
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop Brennan, S. J. Barmentloo, S. Schulze, S. Smith, K. W. Hirai, R. Eldridge, J. J. Fraser, M. Stevance, H. F. Smartt, S. J. Anand, S. Aryan, A. Chen, T. -W. Das, K. K. Drake, A. J. Fransson, C. Gangopadhyay, A. Gkini, A. Jacobson-Galán, W. V. Jerkstrand, A. Johansson, J. Nicholl, M. Pignata, G. Sarin, N. Singh, A. Sollerman, J. Srivastav, S. van Baal, B. F. A. Chambers, K. C. Coughlin, M. W. Gao, H. Graham, M. J. Huber, M. E. Lin, C. -C. Lowe, T. B. Magnier, E. A. Masci, F. J. Purdum, J. Rest, A. Rusholme, B. Smith, R. Smith, I. A. Tweddle, J. W. Wainscoat, R. J. de Boer, T. High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Over the past two decades, an increasing number of transients have shown luminous activity at their explosion sites weeks to years before an interacting supernova (SN) is observed. For some objects, this pre-SN activity is typically linked to large-scale mass-loss events preceding core collapse, yet its triggering mechanism and the underlying explosion process remain uncertain. We present SN 2022mop, which was initially observed in August 2022, exhibiting nebular emission, including [O I], Mg I], and [Ca II], resembling the late-time (~200 days post-explosion) spectrum of a stripped-envelope SN (SESN) from a progenitor with M[ZAMS] < 18 Msun. SN 2022mop shows strong (~ 1 mag) repeating undulations in its light curve, suggesting late-time interaction. In mid-2024, the transient re-brightened for several months before a Type IIn SN (r[peak] = -18.2 mag) was observed in December 2024, closely resembling the evolution of SN 2009ip. By triangulating both transients using Pan-STARRS images, we determine that both transients are coincident within approximately 3 parsecs. Given the environment, the chance alignment of two isolated SNe is unlikely. We propose a merger-burst scenario: a compact object formed in 2022, is kicked into an eccentric orbit, interacts with its hydrogen-rich companion over subsequent months, and ultimately merges, triggering a Type IIn SN-like transient.
title	Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop
topic	High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2503.08768

Similar Items