Close, bright, and boxy: the superluminous SN 2018hti-Reference-Cited by-同舟云学术

Close, bright, and boxy: the superluminous SN 2018hti

Published:2022-03-17 Issue:3 Volume:512 Page:4484-4502
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Fiore A¹²^ORCID,Benetti S²^ORCID,Nicholl M³⁴,Reguitti A²⁵⁶^ORCID,Cappellaro E²,Campana S⁷,Bose S⁸⁹^ORCID,Paraskeva E¹⁰¹¹¹²¹³,Berger E¹⁴,Bravo T M¹⁵^ORCID,Burke J¹⁶¹⁷,Cai Y-Z¹⁸^ORCID,Chen T-W¹⁹,Chen P²⁰,Ciolfi R²²¹^ORCID,Dong S²⁰,Gomez S²²,Gromadzki M²³^ORCID,Gutiérrez C P²⁴²⁵^ORCID,Hiramatsu D¹⁶¹⁷¹⁴²⁶,Hosseinzadeh G²⁷,Howell D A¹⁶¹⁷,Jerkstrand A¹⁹,Kankare E²⁸,Kozyreva A²⁹^ORCID,Maguire K³⁰^ORCID,McCully C¹⁶,Ochner P²³¹,Pellegrino C¹⁶¹⁷,Pignata G⁵⁶,Post R S³²,Elias-Rosa N²³³,Shahbandeh M³⁴,Schuldt S²⁹³⁵,Thomas B P³⁶,Tomasella L²^ORCID,Vinkó J³⁶³⁷³⁸³⁹,Vogl C²⁹,Wheeler J C³⁶^ORCID,Young D R⁴⁰

Affiliation:

1. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT *) , Fondazione Bruno Kessler, Trento, Italy

2. INAF - Osservatorio Astronomico di Padova , Vicolo dell’Osservatorio 5, I-35122 Padova, Italy

3. Birmingham Institute for Gravitational Wave Astronomy and School of Physics and Astronomy, University of Birmingham , Birmingham B15 2TT, UK

4. Institute for Astronomy, University of Edinburgh , Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK

5. Departamento de Ciencias Físicas - Universidad Andres Bello , Avda. República 252, Santiago 8320000, Chile

6. Millennium Institute of Astrophysics , Nuncio Monsenor Sótero Sanz 100, Providencia, Santiago, Chile

7. INAF - Osservatorio Astronomico di Brera , Via Bianchi 46, I-23807 Merate, Italy

8. Department of Astronomy, The Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210, USA

9. Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University , 191 W.Woodruff Avenue, Columbus, OH 43210, USA

10. IAASARS, National Observatory of Athens , 15236 Penteli, Greece

11. Department of Astrophysics, Astronomy & Mechanics, Faculty of Physics, National and Kapodistrian University of Athens , 15784 Athens, Greece

12. Nordic Optical Telescope , Apartado 474, E-38700 Santa Cruz de La Palma, Santa Cruz de Tenerife, Spain

13. Department of Physics and Astronomy, Aarhus University , NyMunkegade 120, DK-8000 Aarhus C, Denmark

14. Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138-1516, USA

15. School of Physics and Astronomy, University of Southampton , Southampton, Hampshire SO17 1BJ, UK

16. Las Cumbres Observatory , 6740 Cortona Dr. Suite 102, Goleta, CA 93117, USA

17. Department of Physics, University of California , Santa Barbara, Santa Barbara, CA 93106, USA

18. Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University , Beijing 100084, China

19. The Oskar Klein Centre, Department of Astronomy, Stockholm University , AlbaNova, SE-10691 Stockholm, Sweden

20. Kavli Institute for Astronomy and Astrophysics, Peking University , Yi He Huan Road 5, Hai Dian District, Beijing 100871, China

21. INFN – Sezione di Padova , Via Francesco Marzolo 8, I-35131 Padova, Italy

22. Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA

23. Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, PL-00-478 Warszawa, Poland

24. Finnish Centre for Astronomy with ESO (FINCA), University of Turku , FI-20014 Turku, Finland

25. Tuorla Observatory, Department of Physics and Astronomy, University of Turku , FI-20014 Turku, Finland

26. The NSF AI Institute for Artificial Intelligence and Fundamental Interactions

27. Steward Observatory, University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA

28. Department of Physics and Astronomy, University of Turku , FI-20014 Turku, Finland

29. Max-Planck-Institut für Astrophysik , Karl-Schwarzschild-Str 1, D-85748 Garching, Germany

30. School of Physics, Trinity College Dublin, The University of Dublin , Dublin 2, Ireland

31. Dipartimento di Fisica e Astronomia G. Galilei, Universitá di Padova , Vicolo dell’Osservatorio 3, I-35122 Padova, Italy

32. Post Astronomy , Lexington, MA 02421, USA

33. Institute of Space Sciences (ICE , CSIC), Campus UAB, Carrer de Can Magrans s/n, E-08193 Barcelona, Spain

34. Department of Physics, Florida State University , 77 Chieftan Way, Tallahassee, FL 32306, USA

35. Physik Department, Technische Universität München , James-Franck Str 1, D-85748 Garching, Germany

36. Department of Astronomy, University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA

37. Konkoly Observatory , CSFK, Konkoly-Thege M. út 15-17, Budapest 1121, Hungary

38. Institute of Physics, ELTE Eötvös Loránd University , Pázmány Péter sétány 1/A, Budapest 1117 Hungary

39. Department of Optics & Quantum Electronics, University of Szeged , Dóm tér 9, Szeged 6720, Hungary

40. Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast , Belfast BT7 1NN, UK

Abstract

ABSTRACT 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 ${\sim}40\, \mathrm{M}_\odot$ progenitor star.

Funder

University of Turku

Aarhus University

University of Oslo

University of Iceland

Stockholm University

IAA

University of Copenhagen

INAF-Osservatorio Astronomico di Padova

Horizon 2020

University of Hawaii

National Aeronautics and Space Administration