Tracing the Propagation of Shocks in the Equatorial Ring of SN 1987A over Decades with the Hubble Space Telescope

Autor: Christos Tegkelidis, Josefin Larsson, Claes Fransson

Publikováno v: The Astrophysical Journal, Vol 976, Iss 2, p 164 (2024)

The nearby SN 1987A offers a unique opportunity to investigate the complex shock interaction between the ejecta and circumstellar medium. We track the evolution of the optical hot spots within the equatorial ring (ER) by analyzing 33 Hubble Space Tel

Externí odkaz: https://doaj.org/article/ab3b52d30ff94ec6ad88de42efce5e89

JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition

Autor: Richard G. Arendt, Martha L. Boyer, Eli Dwek, Mikako Matsuura, Aravind P. Ravi, Armin Rest, Roger Chevalier, Phil Cigan, Ilse De Looze, Guido De Marchi, Claes Fransson, Christa Gall, R. D. Gehrz, Haley L. Gomez, Tuomas Kangas, Florian Kirchschlager, Robert P. Kirshner, Josefin Larsson, Peter Lundqvist, Dan Milisavljevic, Sangwook Park, Nathan Smith, Jason Spyromilio, Tea Temim, Lifan Wang, J. Craig Wheeler, Charles E. Woodward

Publikováno v: The Astrophysical Journal, Vol 959, Iss 2, p 95 (2023)

JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spatially re

Externí odkaz: https://doaj.org/article/c1b4a2c811ad4c9293c3c0b2446249ad

SN 2019zrk, a bright SN 2009ip analog with a precursor

Autor: Claes Fransson, Jesper Sollerman, Nora L. Strotjohann, Sheng Yang, Steve Schulze, Cristina Barbarino, Erik C. Kool, Eran O. Ofek, Arien Crellin-Quick, Kishalay De, Andrew J. Drake, Christoffer Fremling, Avishay Gal-Yam, Anna Y. Q. Ho, Mansi M. Kasliwal

We present photometric and spectroscopic observations of the Type IIn supernova SN 2019zrk (also known as ZTF20aacbyec). The SN shows a $\gtrsim$ 100 day precursor, with a slow rise, followed by a rapid rise to M $\sim -19.2$ in the $r$ and $g$ bands

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80fd50ae2f2fa4f56e5f8c0a76c87f93

Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A

Autor: Josefin Larsson, Dennis Alp, Claes Fransson

Supernova 1987A offers a unique opportunity to study an evolving supernova in unprecedented detail over several decades. The X-ray emission is dominated by interactions between the ejecta and the circumstellar medium, primarily the equatorial ring (E

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b8112ae0c8e87f06d3cfae4e5400a64
http://arxiv.org/abs/2103.02612

The Slow Demise of the Long-Lived SN 2005ip

Autor: Claes Fransson, Tamás Szalai, Wen-fai Fong, Alexei V. Filippenko, Nathan Smith, E. Montiel, Schuyler D. Van Dyk, T. G. Brink, Charles D. Kilpatrick, Joseph S. Gallagher, Geoffrey C. Clayton, K. Azalee Bostroem, J. E. Andrews, Adam Miller, Jon C. Mauerhan, Patrick L. Kelly, Maximilian Stritzinger, S. Bradley Cenko, O. D. Fox

Publikováno v: Fox, O D, Fransson, C, Smith, N, Andrews, J, Azalee Bostroem, K, Brink, T G, Bradley Cenko, S, Clayton, G C, Filippenko, A V, Fong, W F, Gallagher, J S, Kelly, P L, Kilpatrick, C D, Mauerhan, J C, Miller, A M, Montiel, E, Stritzinger, M D, Szalai, T & Van Dyk, S D 2020, ' The slow demise of the long-lived SN 2005ip ', Monthly Notices of the Royal Astronomical Society, vol. 498, no. 1, pp. 517-531 . https://doi.org/10.1093/mnras/staa2324

The Type IIn supernova (SN) 2005ip is one of the most well-studied and long-lasting examples of a SN interacting with its circumstellar environment. The optical light curve plateaued at a nearly constant level for more than five years, suggesting ong

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be1c15fa32a86cff7bc6833910bf3e45
http://arxiv.org/abs/2008.02301