WFRF:(Shahbandeh M.)
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Close, bright, and boxy : the superluminous SN 2018hti
- Fiore, A. (author)
- Benetti, S. (author)
- Nicholl, M. (author)
- show more...
- Reguitti, A. (author)
- Cappellaro, E. (author)
- Campana, S. (author)
- Bose, S. (author)
- Paraskeva, E. (author)
- Berger, E. (author)
- Bravo, T. M. (author)
- Burke, J. (author)
- Cai, Y.-Z. (author)
- Chen, P. (author)
- Ciolfi, R. (author)
- Dong, S. (author)
- Gomez, S. (author)
- Gromadzki, M. (author)
- Gutiérrez, C. P. (author)
- Hiramatsu, D. (author)
- Hosseinzadeh, G. (author)
- Howell, D. A. (author)
- Kankare, E. (author)
- Kozyreva, A. (author)
- Maguire, K. (author)
- McCully, C. (author)
- Ochner, P. (author)
- Pellegrino, C. (author)
- Pignata, G. (author)
- Post, R. S. (author)
- Elias-Rosa, N. (author)
- Shahbandeh, M. (author)
- Schuldt, S. (author)
- Thomas, B. P. (author)
- Tomasella, L. (author)
- Vinkó, J. (author)
- Vogl, C. (author)
- Wheeler, J. C. (author)
- Young, D. R. (author)
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- (creator_code:org_t)
- 2022-03-17
- 2022
- English.
- In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 512:3, s. 4484-4502
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- SN 2018hti was a very nearby (z = 0.0614) superluminous supernova with an exceedingly bright absolute magnitude of −21.7 mag in r band at maximum. The densely sampled pre-maximum light curves of SN 2018hti show a slow luminosity evolution and constrain the rise time to ∼50 rest-frame d. We fitted synthetic light curves to the photometry to infer the physical parameters of the explosion of SN 2018hti for both the magnetar and the CSM-interaction scenarios. We conclude that one of two mechanisms could be powering the luminosity of SN 2018hti; interaction with ∼10 M⊙ of circumstellar material or a magnetar with a magnetic field of Bp∼ 1.3 × 1013 G, and initial period of Pspin∼ 1.8 ms. From the nebular spectrum modelling we infer that SN 2018hti likely results from the explosion of a ∼40M⊙∼40M⊙ progenitor star.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- supernovae: general
- supernovae: individual: SN 2018hti
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Fiore, A.
- Benetti, S.
- Nicholl, M.
- Reguitti, A.
- Cappellaro, E.
- Campana, S.
- show more...
- Bose, S.
- Paraskeva, E.
- Berger, E.
- Bravo, T. M.
- Burke, J.
- Cai, Y.-Z.
- Chen, Ting-Wan
- Chen, P.
- Ciolfi, R.
- Dong, S.
- Gomez, S.
- Gromadzki, M.
- Gutiérrez, C. P.
- Hiramatsu, D.
- Hosseinzadeh, G.
- Howell, D. A.
- Jerkstrand, Ande ...
- Kankare, E.
- Kozyreva, A.
- Maguire, K.
- McCully, C.
- Ochner, P.
- Pellegrino, C.
- Pignata, G.
- Post, R. S.
- Elias-Rosa, N.
- Shahbandeh, M.
- Schuldt, S.
- Thomas, B. P.
- Tomasella, L.
- Vinkó, J.
- Vogl, C.
- Wheeler, J. C.
- Young, D. R.
- show less...
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Stockholm University
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