C
Claes Fransson
Researcher at Stockholm University
Publications - 300
Citations - 18798
Claes Fransson is an academic researcher from Stockholm University. The author has contributed to research in topics: Supernova & Light curve. The author has an hindex of 76, co-authored 289 publications receiving 17337 citations. Previous affiliations of Claes Fransson include Nova Southeastern University.
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Journal ArticleDOI
Two stripped envelope supernovae with circumstellar interaction. But only one really shows it
Jesper Sollerman,Claes Fransson,Cristina Barbarino,Christoffer Fremling,Assaf Horesh,Erik C. Kool,Steve Schulze,Itai Sfaradi,Shan Yang,Eric C. Bellm,Rick Burruss,Virginia Cunningham,Kaushik De,Andrew Drake,V. Z. Golkhou,David A. Green,Mansi M. Kasliwal,Shrinivas R. Kulkarni,Thomas Kupfer,Russ R. Laher,Frank J. Masci,Hector P. Rodriguez,B. Rusholme,David R. Williams,Lin Yan,Jeffry Zolkower +25 more
TL;DR: In this paper, the authors investigated the presence of CSM interaction with previously ejected material, a phenomenon that is unusual among SE SNe, and they used their follow-up photometry and spectroscopy for these supernovae to demonstrate the presence and properties of the CSM, and discuss why the signals are so different for the two objects.
Journal ArticleDOI
High angular resolution ALMA images of dust and molecules in the SN 1987A ejecta
Phil Cigan,Mikako Matsuura,Haley Louise Gomez,Remy Indebetouw,F. J. Abellan,Michael Gabler,Anita M. S. Richards,Dennis Alp,Timothy A. Davis,Hans-Thomas Janka,Jason Spyromilio,M. J. Barlow,David N. Burrows,Eli Dwek,Claes Fransson,Bryan Gaensler,Josefin Larsson,Patrice Bouchet,Peter Lundqvist,J. M. Marcaide,Cherry Ng,Sangwook Park,Patrick F. Roche,Jacco Th. van Loon,J. C. Wheeler,Giovanna Zanardo +25 more
TL;DR: In this article, high angular resolution (~80 mas) ALMA continuum images of the SN 1987A system, together with CO$J$=2 $\!\rightarrow\!$ 1, $J$ =6 $\! \rightarrow/!$ 5, and SiO $J=5 $\! ǫ 6 images, were presented, which clearly resolve the ejecta and ring (synchrotron continuum) components.
Journal ArticleDOI
The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell
Leonardo Tartaglia,A. Pastorello,Jesper Sollerman,Claes Fransson,Seppo Mattila,Morgan Fraser,Francesco Taddia,L. Tomasella,Massimo Turatto,A. Morales-Garoffolo,Nancy Elias-Rosa,Nancy Elias-Rosa,Peter Lundqvist,Jussi Harmanen,T. M. Reynolds,Enrico Cappellaro,Cristina Barbarino,A. Nyholm,Erik C. Kool,Eran O. Ofek,X. Gao,Zhi-Ping Jin,H. Tan,David J. Sand,F. Ciabattari,Xiang-Yu Wang,J. Zhang,Fang Huang,Wenxiong Li,Jun Mo,Liming Rui,Danfeng Xiang,Tianmeng Zhang,Griffin Hosseinzadeh,Dale Andrew Howell,Dale Andrew Howell,Curtis McCully,Stefano Valenti,Stefano Benetti,E. Callis,Ana Sagués Carracedo,Christoffer Fremling,Tuomas Kangas,Adam Rubin,Auni Somero,Giacomo Terreran +45 more
TL;DR: In this article, the authors report the results of the first four years of spectroscopic and photometric monitoring of the Type IIn supernova SN 2015da (also known as PSN J13522411+3941286, or iPTF16tu).
Journal ArticleDOI
X-ray Absorption in Young Core-Collapse Supernova Remnants
Dennis Alp,Josefin Larsson,Claes Fransson,Michael Gabler,Annop Wongwathanarat,H.-Thomas Janka +5 more
TL;DR: In this paper, the authors used three-dimensional neutrino-driven supernova models to estimate optical depths to the center of the explosion, compare different progenitor models, and investigate the effects of explosion asymmetries.
Journal ArticleDOI
The Carnegie Supernova Project II. The shock wave revealed through the fog: the strongly interacting Type IIn SN 2013L
Francesco Taddia,M. D. Stritzinger,Claes Fransson,Peter J. Brown,Carlos Contreras,S. Holmbo,Takashi J. Moriya,Mark M. Phillips,Jesper Sollerman,Nicholas B. Suntzeff,Chris Ashall,Christopher R. Burns,L. Busta,Abdo Campillay,S. Castellon,C. Corco,F. Di Mille,Christa Gall,C. Gonzalez,Eric Hsiao,Nidia Morrell,Anders Nyholm,J. D. Simon,J. Serón +23 more
TL;DR: In this article, the authors present ultra-violet to mid-infrared observations of the long-lasting Type IIn supernova (SN) 2013L obtained by the Carnegie Supernova Project II (CSP-II).