A radio-detected type Ia supernova with helium-rich circumstellar material

Erik C. Kool; Joel Johansson; Jesper Sollerman; Javier Moldón; Takashi J. Moriya; Seppo Mattila; Steve Schulze; Laura Chomiuk; Miguel Pérez-Torres; Chelsea Harris; Peter Lundqvist; Matthew Graham; Sheng Yang; Daniel A. Perley; Nora Linn Strotjohann; Christoffer Fremling; Avishay Gal-Yam; Jeremy Lezmy; Kate Maguire; Conor Omand; Mathew Smith; Igor Andreoni; Eric C. Bellm; Joshua S. Bloom; Kishalay De; Steven L. Groom; Mansi M. Kasliwal; Frank J. Masci; Michael S. Medford; Sungmin Park; Josiah Purdum; Thomas M. Reynolds; Reed Riddle; Estelle Robert; Stuart D. Ryder; Yashvi Sharma; Daniel Stern

doi:10.1038/s41586-023-05916-w

A radio-detected type Ia supernova with helium-rich circumstellar material

Erik C. Kool^*, Joel Johansson, Jesper Sollerman, Javier Moldón, Takashi J. Moriya, Seppo Mattila, Steve Schulze, Laura Chomiuk, Miguel Pérez-Torres, Chelsea Harris, Peter Lundqvist, Matthew Graham, Sheng Yang, Daniel A. Perley, Nora Linn Strotjohann, Christoffer Fremling, Avishay Gal-Yam, Jeremy Lezmy, Kate Maguire, Conor OmandMathew Smith, Igor Andreoni, Eric C. Bellm, Joshua S. Bloom, Kishalay De, Steven L. Groom, Mansi M. Kasliwal, Frank J. Masci, Michael S. Medford, Sungmin Park, Josiah Purdum, Thomas M. Reynolds, Reed Riddle, Estelle Robert, Stuart D. Ryder, Yashvi Sharma, Daniel Stern

^*Corresponding author for this work

Department of Particle Physics and Astrophysics

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Type Ia supernovae (SNe Ia) are thermonuclear explosions of degenerate white dwarf stars destabilized by mass accretion from a companion star¹, but the nature of their progenitors remains poorly understood. A way to discriminate between progenitor systems is through radio observations; a non-degenerate companion star is expected to lose material through winds² or binary interaction³ before explosion, and the supernova ejecta crashing into this nearby circumstellar material should result in radio synchrotron emission. However, despite extensive efforts, no type Ia supernova (SN Ia) has ever been detected at radio wavelengths, which suggests a clean environment and a companion star that is itself a degenerate white dwarf star^4,5. Here we report on the study of SN 2020eyj, a SN Ia showing helium-rich circumstellar material, as demonstrated by its spectral features, infrared emission and, for the first time in a SN Ia to our knowledge, a radio counterpart. On the basis of our modelling, we conclude that the circumstellar material probably originates from a single-degenerate binary system in which a white dwarf accretes material from a helium donor star, an often proposed formation channel for SNe Ia (refs. ^6,7). We describe how comprehensive radio follow-up of SN 2020eyj-like SNe Ia can improve the constraints on their progenitor systems.

Original language	English
Pages (from-to)	477-482
Number of pages	6
Journal	Nature
Volume	617
Issue number	7961
DOIs	https://doi.org/10.1038/s41586-023-05916-w
Publication status	Published - 18 May 2023

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Kool, E. C., Johansson, J., Sollerman, J., Moldón, J., Moriya, T. J., Mattila, S., Schulze, S., Chomiuk, L., Pérez-Torres, M., Harris, C., Lundqvist, P., Graham, M., Yang, S., Perley, D. A., Strotjohann, N. L., Fremling, C., Gal-Yam, A., Lezmy, J., Maguire, K., ... Stern, D. (2023). A radio-detected type Ia supernova with helium-rich circumstellar material. Nature, 617(7961), 477-482. https://doi.org/10.1038/s41586-023-05916-w

@article{9e87fd911a2f47179793819cef40621d,

title = "A radio-detected type Ia supernova with helium-rich circumstellar material",

abstract = "Type Ia supernovae (SNe Ia) are thermonuclear explosions of degenerate white dwarf stars destabilized by mass accretion from a companion star 1, but the nature of their progenitors remains poorly understood. A way to discriminate between progenitor systems is through radio observations; a non-degenerate companion star is expected to lose material through winds 2 or binary interaction 3 before explosion, and the supernova ejecta crashing into this nearby circumstellar material should result in radio synchrotron emission. However, despite extensive efforts, no type Ia supernova (SN Ia) has ever been detected at radio wavelengths, which suggests a clean environment and a companion star that is itself a degenerate white dwarf star 4,5. Here we report on the study of SN 2020eyj, a SN Ia showing helium-rich circumstellar material, as demonstrated by its spectral features, infrared emission and, for the first time in a SN Ia to our knowledge, a radio counterpart. On the basis of our modelling, we conclude that the circumstellar material probably originates from a single-degenerate binary system in which a white dwarf accretes material from a helium donor star, an often proposed formation channel for SNe Ia (refs. 6,7). We describe how comprehensive radio follow-up of SN 2020eyj-like SNe Ia can improve the constraints on their progenitor systems.",

author = "Kool, {Erik C.} and Joel Johansson and Jesper Sollerman and Javier Mold{\'o}n and Moriya, {Takashi J.} and Seppo Mattila and Steve Schulze and Laura Chomiuk and Miguel P{\'e}rez-Torres and Chelsea Harris and Peter Lundqvist and Matthew Graham and Sheng Yang and Perley, {Daniel A.} and Strotjohann, {Nora Linn} and Christoffer Fremling and Avishay Gal-Yam and Jeremy Lezmy and Kate Maguire and Conor Omand and Mathew Smith and Igor Andreoni and Bellm, {Eric C.} and Bloom, {Joshua S.} and Kishalay De and Groom, {Steven L.} and Kasliwal, {Mansi M.} and Masci, {Frank J.} and Medford, {Michael S.} and Sungmin Park and Josiah Purdum and Reynolds, {Thomas M.} and Reed Riddle and Estelle Robert and Ryder, {Stuart D.} and Yashvi Sharma and Daniel Stern",

year = "2023",

month = may,

day = "18",

doi = "10.1038/s41586-023-05916-w",

language = "English",

volume = "617",

pages = "477--482",

journal = "Nature",

issn = "0028-0836",

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Kool, EC, Johansson, J, Sollerman, J, Moldón, J, Moriya, TJ, Mattila, S, Schulze, S, Chomiuk, L, Pérez-Torres, M, Harris, C, Lundqvist, P, Graham, M, Yang, S, Perley, DA, Strotjohann, NL, Fremling, C, Gal-Yam, A, Lezmy, J, Maguire, K, Omand, C, Smith, M, Andreoni, I, Bellm, EC, Bloom, JS, De, K, Groom, SL, Kasliwal, MM, Masci, FJ, Medford, MS, Park, S, Purdum, J, Reynolds, TM, Riddle, R, Robert, E, Ryder, SD, Sharma, Y & Stern, D 2023, 'A radio-detected type Ia supernova with helium-rich circumstellar material', Nature, vol. 617, no. 7961, pp. 477-482. https://doi.org/10.1038/s41586-023-05916-w

TY - JOUR

T1 - A radio-detected type Ia supernova with helium-rich circumstellar material

AU - Kool, Erik C.

AU - Johansson, Joel

AU - Sollerman, Jesper

AU - Moldón, Javier

AU - Moriya, Takashi J.

AU - Mattila, Seppo

AU - Schulze, Steve

AU - Chomiuk, Laura

AU - Pérez-Torres, Miguel

AU - Harris, Chelsea

AU - Lundqvist, Peter

AU - Graham, Matthew

AU - Yang, Sheng

AU - Perley, Daniel A.

AU - Strotjohann, Nora Linn

AU - Fremling, Christoffer

AU - Gal-Yam, Avishay

AU - Lezmy, Jeremy

AU - Maguire, Kate

AU - Omand, Conor

AU - Smith, Mathew

AU - Andreoni, Igor

AU - Bellm, Eric C.

AU - Bloom, Joshua S.

AU - De, Kishalay

AU - Groom, Steven L.

AU - Kasliwal, Mansi M.

AU - Masci, Frank J.

AU - Medford, Michael S.

AU - Park, Sungmin

AU - Purdum, Josiah

AU - Reynolds, Thomas M.

AU - Riddle, Reed

AU - Robert, Estelle

AU - Ryder, Stuart D.

AU - Sharma, Yashvi

AU - Stern, Daniel

PY - 2023/5/18

Y1 - 2023/5/18

N2 - Type Ia supernovae (SNe Ia) are thermonuclear explosions of degenerate white dwarf stars destabilized by mass accretion from a companion star 1, but the nature of their progenitors remains poorly understood. A way to discriminate between progenitor systems is through radio observations; a non-degenerate companion star is expected to lose material through winds 2 or binary interaction 3 before explosion, and the supernova ejecta crashing into this nearby circumstellar material should result in radio synchrotron emission. However, despite extensive efforts, no type Ia supernova (SN Ia) has ever been detected at radio wavelengths, which suggests a clean environment and a companion star that is itself a degenerate white dwarf star 4,5. Here we report on the study of SN 2020eyj, a SN Ia showing helium-rich circumstellar material, as demonstrated by its spectral features, infrared emission and, for the first time in a SN Ia to our knowledge, a radio counterpart. On the basis of our modelling, we conclude that the circumstellar material probably originates from a single-degenerate binary system in which a white dwarf accretes material from a helium donor star, an often proposed formation channel for SNe Ia (refs. 6,7). We describe how comprehensive radio follow-up of SN 2020eyj-like SNe Ia can improve the constraints on their progenitor systems.

AB - Type Ia supernovae (SNe Ia) are thermonuclear explosions of degenerate white dwarf stars destabilized by mass accretion from a companion star 1, but the nature of their progenitors remains poorly understood. A way to discriminate between progenitor systems is through radio observations; a non-degenerate companion star is expected to lose material through winds 2 or binary interaction 3 before explosion, and the supernova ejecta crashing into this nearby circumstellar material should result in radio synchrotron emission. However, despite extensive efforts, no type Ia supernova (SN Ia) has ever been detected at radio wavelengths, which suggests a clean environment and a companion star that is itself a degenerate white dwarf star 4,5. Here we report on the study of SN 2020eyj, a SN Ia showing helium-rich circumstellar material, as demonstrated by its spectral features, infrared emission and, for the first time in a SN Ia to our knowledge, a radio counterpart. On the basis of our modelling, we conclude that the circumstellar material probably originates from a single-degenerate binary system in which a white dwarf accretes material from a helium donor star, an often proposed formation channel for SNe Ia (refs. 6,7). We describe how comprehensive radio follow-up of SN 2020eyj-like SNe Ia can improve the constraints on their progenitor systems.

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U2 - 10.1038/s41586-023-05916-w

DO - 10.1038/s41586-023-05916-w

M3 - Article

C2 - 37198310

AN - SCOPUS:85159611552

SN - 0028-0836

VL - 617

SP - 477

EP - 482

JO - Nature

JF - Nature

IS - 7961

ER -

A radio-detected type Ia supernova with helium-rich circumstellar material

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