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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
SN 2022jli: A Type Ic Supernova with Periodic Modulation of Its Light Curve and an Unusually Long Rise
Astrophysical Journal Letters, Volume 956, No. 1, Article L31, Year 2023
Notification
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Description
We present multiwavelength photometry and spectroscopy of SN 2022jli, an unprecedented Type Ic supernova discovered in the galaxy NGC 157 at a distance of ≈ 23 Mpc. The multiband light curves reveal many remarkable characteristics. Peaking at a magnitude of g = 15.11 ± 0.02, the high-cadence photometry reveals periodic undulations of 12.5 ± 0.2 days superimposed on the 200-day supernova decline. This periodicity is observed in the light curves from nine separate filter and instrument configurations with peak-to-peak amplitudes of ≃ 0.1 mag. This is the first time that repeated periodic oscillations, over many cycles, have been detected in a supernova light curve. SN 2022jli also displays an extreme early excess that fades over ≈25 days, followed by a rise to a peak luminosity of L opt = 1042.1 erg s−1. Although the exact explosion epoch is not constrained by data, the time from explosion to maximum light is ≳ 59 days. The luminosity can be explained by a large ejecta mass (M ej ≈ 12 ± 6 M ⊙) powered by 56Ni, but we find it difficult to quantitatively model the early excess with circumstellar interaction and cooling. Collision between the supernova ejecta and a binary companion is a possible source of this emission. We discuss the origin of the periodic variability in the light curve, including interaction of the SN ejecta with nested shells of circumstellar matter and neutron stars colliding with binary companions. © 2023. The Author(s). Published by the American Astronomical Society.
Authors & Co-Authors
Smartt, Stephen J.
United Kingdom, Belfast
Queen's University Belfast
United Kingdom, Oxford
University of Oxford
Nicholl, Matt
United Kingdom, Belfast
Queen's University Belfast
Stevance, Héloïse F.
United Kingdom, Oxford
University of Oxford
New Zealand, Auckland
The University of Auckland
Rhodes, Lauren
United Kingdom, Oxford
University of Oxford
Sim, S. A.
United Kingdom, Belfast
Queen's University Belfast
Podsiadlowski, Philiṕp
United Kingdom, Oxford
University of Oxford
Anderson, Joseph P.
Chile, Santiago
European Southern Observatory Santiago
Chile, Santiago
Instituto Milenio de Astrofísica
Ashall, Christopher J.
United States, Blacksburg
Virginia Polytechnic Institute and State University
Fender, Robert P.
United Kingdom, Oxford
University of Oxford
Gutiérrez, Claudia P.
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Howell, D. Andrew
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Santa Barbara
University of California, Santa Barbara
Huber, Mark E.C.
United States, Honolulu
University of Hawaiʻi at Mānoa
Inserra, Cosimo
United Kingdom, Cardiff
Cardiff University
Leloudas, Giorgos
Denmark, Lyngby
Technical University of Denmark
Monard, Libert A.G.Berto
South Africa, Calitzdorp
Kleinkaroo Observatory
Muller-Bravo, Tomas E.
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Shappee, Benjamin J.
United States, Honolulu
University of Hawaiʻi at Mānoa
Smith, Kenneth W.
United Kingdom, Belfast
Queen's University Belfast
Terreran, Giacomo
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
Tonry, John L.
United States, Honolulu
University of Hawaiʻi at Mānoa
Tucker, Michael A.
United States, Columbus
The Ohio State University
Young, David R.
United Kingdom, Belfast
Queen's University Belfast
Chen, Tingwan
Taiwan, Taoyuan
National Central University
Ragosta, Fabio
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Italy, Rome
Asi Science Data Center
Galbany, Lluís
Spain, Barcelona
Instituto de Estudios Espaciales de Cataluña
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Gromadzki, Mariusz
Poland, Warsaw
University of Warsaw
McCully, Curtis V.
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
Newsome, Megan
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Santa Barbara
University of California, Santa Barbara
Gonzalez, Estefania Padilla
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Santa Barbara
University of California, Santa Barbara
Pellegrino, Craig M.
United States, Santa Barbara
Las Cumbres Observatory Global Telescope Network, Inc
United States, Santa Barbara
University of California, Santa Barbara
Pérez-Torres, M. A.
Unknown Affiliation
Ridley, Evan J.
United Kingdom, Birmingham
University of Birmingham
Statistics
Citations: 1
Authors: 32
Affiliations: 23
Identifiers
Doi:
10.3847/2041-8213/acfc25
ISSN:
20418205
Research Areas
Environmental