J
Josefin Larsson
Researcher at Royal Institute of Technology
Publications - 119
Citations - 4500
Josefin Larsson is an academic researcher from Royal Institute of Technology. The author has contributed to research in topics: Supernova & Fermi Gamma-ray Space Telescope. The author has an hindex of 33, co-authored 119 publications receiving 4132 citations. Previous affiliations of Josefin Larsson include University of Cambridge & Lund University.
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Journal ArticleDOI
Broad line emission from iron K- and L-shell transitions in the active galaxy 1H 0707-495.
Andrew C. Fabian,Abderahmen Zoghbi,Randy R. Ross,Philip Uttley,Luigi C. Gallo,W. N. Brandt,A. J. Blustin,Thomas Boller,M. D. Caballero-Garcia,Josefin Larsson,Jon M. Miller,Giovanni Miniutti,Gabriele Ponti,Rubens Reis,Christopher S. Reynolds,Yasuo Tanaka,Andrew J. Young +16 more
TL;DR: The combination of spectral and timing data on 1H 0707-495 provides strong evidence that the authors are witnessing emission from matter within a gravitational radius, or a fraction of a light minute, from the event horizon of a rapidly spinning, massive black hole.
Journal ArticleDOI
Identification and Properties of the Photospheric Emission in GRB090902B
Felix Ryde,Felix Ryde,Magnus Axelsson,Bin-Bin Zhang,S. McGlynn,S. McGlynn,Asaf Pe'er,Christoffer Lundman,Christoffer Lundman,Stefan Larsson,Milan Battelino,Milan Battelino,Bing Zhang,Elisabetta Bissaldi,Johan Bregeon,Michael S. Briggs,James Chiang,F. de Palma,F. de Palma,Sylvain Guiriec,Josefin Larsson,Francesco Longo,Francesco Longo,Sheila McBreen,Nicola Omodei,Vahé Petrosian,Robert D. Preece,A. J. van der Horst +27 more
TL;DR: The Fermi Gamma-ray Space Telescope observed the bright and long GRB090902B, lying at a redshift of z = 1822 together with the Large Area Telescope (LAT) and the gamma-ray Burst Monitor (GBM) as discussed by the authors.
Journal ArticleDOI
Grb110721a: an extreme peak energy and signatures of the photosphere
Magnus Axelsson,Magnus Axelsson,Luca Baldini,Guido Barbiellini,Guido Barbiellini,Matthew G. Baring,Ronaldo Bellazzini,J. Bregeon,M. Brigida,M. Brigida,P. Bruel,R. Buehler,G. A. Caliandro,R. A. Cameron,P. A. Caraveo,Claudia Cecchi,Claudia Cecchi,R. C. G. Chaves,A. Chekhtman,A. Chekhtman,James Chiang,R. Claus,Jan Conrad,Jan Conrad,S. Cutini,F. D'Ammando,F. D'Ammando,F. de Palma,F. de Palma,Charles D. Dermer,E. Do Couto E Silva,Persis S. Drell,C. Favuzzi,C. Favuzzi,S. J. Fegan,Elizabeth C. Ferrara,W. B. Focke,Yasushi Fukazawa,P. Fusco,P. Fusco,F. Gargano,Dario Gasparrini,Neil Gehrels,S. Germani,S. Germani,Nicola Giglietto,Nicola Giglietto,Marcello Giroletti,G. Godfrey,Sylvain Guiriec,Daniela Hadasch,Y. Hanabata,M. Hayashida,M. Hayashida,X. Hou,Shabnam Iyyani,Shabnam Iyyani,Miranda Jackson,Miranda Jackson,D. Kocevski,M. Kuss,Josefin Larsson,Stefan Larsson,Francesco Longo,Francesco Longo,F. Loparco,F. Loparco,Christoffer Lundman,Christoffer Lundman,M. N. Mazziotta,Julie McEnery,Julie McEnery,Tsunefumi Mizuno,M. E. Monzani,E. Moretti,E. Moretti,A. Morselli,S. Murgia,E. Nuss,T. Nymark,T. Nymark,Masanori Ohno,Nicola Omodei,Melissa Pesce-Rollins,F. Piron,G. Pivato,J. L. Racusin,S. Rainò,S. Rainò,M. Razzano,M. Razzano,Soebur Razzaque,Soebur Razzaque,A. Reimer,M. Roth,Felix Ryde,Felix Ryde,Daniel Sánchez,Carmelo Sgrò,E. J. Siskind,Gloria Spandre,P. Spinelli,P. Spinelli,M. Stamatikos,M. Stamatikos,L. Tibaldo,L. Tibaldo,M. Tinivella,T. L. Usher,Justin Vandenbroucke,V. Vasileiou,Giacomo Vianello,V. Vitale,A. P. Waite,Brian L Winer,K. S. Wood,J. M. Burgess,P. N. Bhat,Elisabetta Bissaldi,Michael S. Briggs,Valerie Connaughton,Gerald J. Fishman,Gerard Fitzpatrick,Suzanne Foley,David Gruber,R. M. Kippen,Chryssa Kouveliotou,Peter Jenke,Peter Jenke,Sheila McBreen,S. McGlynn,Charles A. Meegan,W. S. Paciesas,V. Pelassa,Robert D. Preece,D. Tierney,A. von Kienlin,Colleen A. Wilson-Hodge,Shaolin Xiong,Asaf Pe'er +139 more
TL;DR: In this paper, the Fermi Gamma-ray Space Telescope (LAT) was used to observe the gamma-ray burst of GRB110721A, which lasted for approximately 24.5 s (in the GBM) and had a peak flux of (5.7 +/- 0.2) 10(exp -5) erg s (exp -1) cm(exp −2)
Journal ArticleDOI
HIGH-DENSITY CIRCUMSTELLAR INTERACTION IN THE LUMINOUS TYPE IIn SN 2010jl : THE FIRST 1100 DAYS
Claes Fransson,Mattias Ergon,Peter Challis,Roger A. Chevalier,Robert P. Kirshner,George H Marion,Dan Milisavljevic,Nathan Smith,Filomena Bufano,Andrew S. Friedman,Tuomas Kangas,Josefin Larsson,Seppo Mattila,Stefano Benetti,Ryan Chornock,Ian Czekala,Alicia M. Soderberg,Jesper Sollerman +17 more
TL;DR: In this paper, the spectral lines of the Type IIn supernova (SN) 2010jl were analyzed, including photometry and spectroscopy in the ultraviolet, optical, and near-IR bands, 26-1128 days after first detection.
Journal ArticleDOI
Suzaku Observations of the Hard X-ray Variability of MCG-6-30-15: the Effects of Strong Gravity Around a Kerr Black Hole
Giovanni Miniutti,Andrew C. Fabian,Naohisa Anabuki,J. Crummy,Yasushi Fukazawa,Luigi C. Gallo,Yoshito Haba,Kiyoshi Hayashida,Stephen S. Holt,Hideyo Kunieda,Josefin Larsson,Alex Markowitz,Chiho Matsumoto,Masanori Ohno,James Reeves,James Reeves,Tadayuki Takahash,Yasuo Tanaka,Yuichi Terashima,Yuichi Terashima,Ken'ichi Torii,Yoshihiro Ueda,M. Ushio,Shin Watanabe,Makoto Yamauchi,Tahir Yaqoob,Tahir Yaqoob +26 more
TL;DR: Suzaku has, for the first time, enabled the hard X-ray variability of the Seyfert 1 galaxy MCG −6-30-15 to be measured as discussed by the authors.