SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae

M R Magee; T L Killestein; M Pursiainen; B Godson; D Jarvis; C Jiménez-Palau; J D Lyman; D Steeghs; B Warwick; J P Anderson; T Butterley; T -W Chen; V S Dhillon; L Galbany; S González-Gaitán; M Gromadzki; C Inserra; L Kelsey; A Kumar; G Leloudas; S Mattila; S Moran; T E Müller-Bravo; K Noysena; G Ramsay; S Srivastav; R Starling; R W Wilson; D R Young; K Ackley; R P Breton; J Casares Velázquez; M J Dyer; D K Galloway; E Kankare; R Kotak; L K Nuttall; D O’Neill; P Pessi; D Pollacco; K Ulaczyk; O Yaron

doi:10.1093/mnras/staf1675

SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae

M R Magee^*
, T L Killestein
, M Pursiainen
, B Godson
, D Jarvis
, C Jiménez-Palau
, J D Lyman
, D Steeghs
, B Warwick
, J P Anderson
, T Butterley
, T -W Chen
, V S Dhillon
, L Galbany
, S González-Gaitán
, M Gromadzki
, C Inserra
, L Kelsey
, A Kumar
, G Leloudas

S Mattila, S Moran, T E Müller-Bravo, K Noysena, G Ramsay, S Srivastav, R Starling, R W Wilson, D R Young, K Ackley, R P Breton, J Casares Velázquez, M J Dyer, D K Galloway, E Kankare, R Kotak, L K Nuttall, D O’Neill, P Pessi, D Pollacco, K Ulaczyk, O Yaron

^*Corresponding author for this work

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

3 Citations (Scopus)

9 Downloads (Pure)

Abstract

Type Iax supernovae (SNe Iax) are one of the most common subclasses of thermonuclear supernova and yet their sample size, particularly those observed shortly after explosion, remains relatively small. In this paper, we present photometric and spectroscopic observations of two SNe Iax discovered shortly after explosion, SN 2024bfu and SN 2025qe. Both SNe were observed by multiple all-sky surveys, enabling tight constraints on the moment of first light and the shape of the early light curve. Our observations of SN 2025qe begin

Original language	English
Pages (from-to)	3731-3753
Number of pages	23
Journal	Monthly Notices of the Royal Astronomical Society
Volume	543
Issue number	4
Early online date	03 Oct 2025
DOIs	https://doi.org/10.1093/mnras/staf1675
Publication status	Early online date - 03 Oct 2025

Keywords

supernovae: individual: SN 2024bfu
supernovae: individual: SN 2025qe
supernovae: general

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10.1093/mnras/staf1675Licence: CC BY

SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae
© The Author(s) 2025. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 31.6 MBLicence: CC BY

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Magee, M. R., Killestein, T. L., Pursiainen, M., Godson, B., Jarvis, D., Jiménez-Palau, C., Lyman, J. D., Steeghs, D., Warwick, B., Anderson, J. P., Butterley, T., Chen, T. .-W., Dhillon, V. S., Galbany, L., González-Gaitán, S., Gromadzki, M., Inserra, C., Kelsey, L., Kumar, A., ... Yaron, O. (2025). SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae. Monthly Notices of the Royal Astronomical Society, 543(4), 3731-3753. Advance online publication. https://doi.org/10.1093/mnras/staf1675

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title = "SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae",

abstract = "Type Iax supernovae (SNe Iax) are one of the most common subclasses of thermonuclear supernova and yet their sample size, particularly those observed shortly after explosion, remains relatively small. In this paper, we present photometric and spectroscopic observations of two SNe Iax discovered shortly after explosion, SN 2024bfu and SN 2025qe. Both SNe were observed by multiple all-sky surveys, enabling tight constraints on the moment of first light and the shape of the early light curve. Our observations of SN 2025qe begin",

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Magee, MR, Killestein, TL, Pursiainen, M, Godson, B, Jarvis, D, Jiménez-Palau, C, Lyman, JD, Steeghs, D, Warwick, B, Anderson, JP, Butterley, T, Chen, T-W, Dhillon, VS, Galbany, L, González-Gaitán, S, Gromadzki, M, Inserra, C, Kelsey, L, Kumar, A, Leloudas, G, Mattila, S, Moran, S, Müller-Bravo, TE, Noysena, K, Ramsay, G, Srivastav, S, Starling, R, Wilson, RW, Young, DR, Ackley, K, Breton, RP, Casares Velázquez, J, Dyer, MJ, Galloway, DK, Kankare, E, Kotak, R, Nuttall, LK, O’Neill, D, Pessi, P, Pollacco, D, Ulaczyk, K & Yaron, O 2025, 'SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae', Monthly Notices of the Royal Astronomical Society, vol. 543, no. 4, pp. 3731-3753. https://doi.org/10.1093/mnras/staf1675

TY - JOUR

T1 - SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae

AU - Magee, M R

AU - Killestein, T L

AU - Pursiainen, M

AU - Godson, B

AU - Jarvis, D

AU - Jiménez-Palau, C

AU - Lyman, J D

AU - Steeghs, D

AU - Warwick, B

AU - Anderson, J P

AU - Butterley, T

AU - Chen, T -W

AU - Dhillon, V S

AU - Galbany, L

AU - González-Gaitán, S

AU - Gromadzki, M

AU - Inserra, C

AU - Kelsey, L

AU - Kumar, A

AU - Leloudas, G

AU - Mattila, S

AU - Moran, S

AU - Müller-Bravo, T E

AU - Noysena, K

AU - Ramsay, G

AU - Srivastav, S

AU - Starling, R

AU - Wilson, R W

AU - Young, D R

AU - Ackley, K

AU - Breton, R P

AU - Casares Velázquez, J

AU - Dyer, M J

AU - Galloway, D K

AU - Kankare, E

AU - Kotak, R

AU - Nuttall, L K

AU - O’Neill, D

AU - Pessi, P

AU - Pollacco, D

AU - Ulaczyk, K

AU - Yaron, O

PY - 2025/10/3

Y1 - 2025/10/3

N2 - Type Iax supernovae (SNe Iax) are one of the most common subclasses of thermonuclear supernova and yet their sample size, particularly those observed shortly after explosion, remains relatively small. In this paper, we present photometric and spectroscopic observations of two SNe Iax discovered shortly after explosion, SN 2024bfu and SN 2025qe. Both SNe were observed by multiple all-sky surveys, enabling tight constraints on the moment of first light and the shape of the early light curve. Our observations of SN 2025qe begin

AB - Type Iax supernovae (SNe Iax) are one of the most common subclasses of thermonuclear supernova and yet their sample size, particularly those observed shortly after explosion, remains relatively small. In this paper, we present photometric and spectroscopic observations of two SNe Iax discovered shortly after explosion, SN 2024bfu and SN 2025qe. Both SNe were observed by multiple all-sky surveys, enabling tight constraints on the moment of first light and the shape of the early light curve. Our observations of SN 2025qe begin

KW - supernovae: individual: SN 2024bfu

KW - supernovae: individual: SN 2025qe

KW - supernovae: general

U2 - 10.1093/mnras/staf1675

DO - 10.1093/mnras/staf1675

M3 - Article

SN - 0035-8711

VL - 543

SP - 3731

EP - 3753

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

SN 2024bfu, SN 2025qe, and the early light curves of type Iax supernovae

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Keywords

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