J. E. Ovaldsen
University of Oslo
11 Papers
122 Citations
J. E. Ovaldsen is an academic researcher from University of Oslo. The author has contributed to research in topics: Galaxy & Gamma-ray burst. The author has an hindex of 8, co-authored 11 publications.
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Papers
The Afterglows of Swift-era Gamma-Ray Bursts. I. Comparing pre-Swift and Swift era Long/Soft (Type II) GRB Optical Afterglows
David Alexander Kann,Sylvio Klose,Bing Zhang,D. B. Malesani,Ehud Nakar,Ehud Nakar,A. Pozanenko,A. C. Wilson,Nathaniel R. Butler,Pall Jakobsson,Pall Jakobsson,Steve Schulze,Maksim V. Andreev,L. A. Antonelli,I. F. Bikmaev,V. Biryukov,Markus Böttcher,R. A. Burenin,J. M. Castro Cerón,J. M. Castro Cerón,A. J. Castro-Tirado,G. Chincarini,G. Chincarini,B. E. Cobb,B. E. Cobb,Stefano Covino,P. D'Avanzo,Valerio D'Elia,M. Della Valle,M. Della Valle,A. de Ugarte Postigo,Yu. S. Efimov,P. Ferrero,Dino Fugazza,Johan P. U. Fynbo,M. Gålfalk,F. Grundahl,Javier Gorosabel,S. Gupta,Sergei Guziy,B. M. Hafizov,Jens Hjorth,K. Holhjem,Mansur Ibrahimov,Myungshin Im,G. L. Israel,M. Jeĺinek,B. L. Jensen,R. Karimov,Irek Khamitov,Ü. Kızıloǧlu,E. Klunko,Petr Kubánek,Alexander Kutyrev,Peter Laursen,Andrew J. Levan,Filippo Mannucci,C. M. Martin,A. Mescheryakov,Nestor Mirabal,Jay P. Norris,J. E. Ovaldsen,D. Paraficz,Elena P. Pavlenko,Silvia Piranomonte,Andrea Rossi,Vasilij Rumyantsev,R. Salinas,A. Sergeev,D. Sharapov,Jesper Sollerman,Jesper Sollerman,Bringfried Stecklum,Luigi Stella,Gianpiero Tagliaferri,Nial R. Tanvir,J. Telting,Vincenzo Testa,Adria C. Updike,A. Volnova,Darach Watson,Klaas Wiersema,Klaas Wiersema,Dong Xu +83 more
TL;DR: In this paper, the authors collected optical photometry data from the literature on a large sample of Swift-era gamma-ray burst (GRB) afterglows including GRBs up to September 2009, for a total of 76 GRBs, and presented an additional three pre-Swift GRBs not included in an earlier sample.
Supernova 2006aj and the associated X-Ray Flash 060218
Jesper Sollerman,Andreas O. Jaunsen,Johan P. U. Fynbo,Jens Hjorth,Pall Jakobsson,Maximilian Stritzinger,C. Feron,Peter Laursen,J. E. Ovaldsen,J. H. Selj,Christina C. Thöne,D. Xu,Tamara M. Davis,Javier Gorosabel,Darach Watson,R. Duro,I. Ilyin,B. L. Jensen,N. Lysfjord,T. Marquart,T. B. Nielsen,Jyri Näränen,H. E. Schwarz,Stefanie Walch,Margrethe Wold,Göran Östlin +25 more
TL;DR: In this paper, the afterglow of the gamma-ray burst (GRB) of February 18, 2006 is studied and the evolution of the supernova over the peak, when the U band portion of the spectrum rapidly fades due to extensive line blanketing.
The nature of the x-ray flash of August 24 2005
Jesper Sollerman,Johan P. U. Fynbo,J. Gorosabel,J. P. Halpern,Jens Hjorth,Pall Jakobsson,Nestor Mirabal,Darach Watson,D. Xu,A. J. Castro-Tirado,C. Feron,Andreas O. Jaunsen,Martin Jelínek,B. L. Jensen,D. A. Kann,J. E. Ovaldsen,A. Pozanenko,Maximilian Stritzinger,C. C. Thoene,A. de Ugarte Postigo,S. Guziy,Mansur Ibrahimov,S. P. Jaervinen,A. J. Levan,Vasilij Rumyantsev,Nial R. Tanvir +25 more
TL;DR: In this paper, photometric R-band observations of the fading optical afterglow of the X-Ray Flash XRF050824, from 11 minutes to 104 days after the burst are presented.
The nature of the X-ray flash of August 24 2005 Photometric evidence for an on-axis z = 0.83 burst with continuous energy injection and an associated supernova?
Jesper Sollerman,Johan P. U. Fynbo,Javier Gorosabel,Jules P. Halpern,Jens Hjorth,Pall Jakobsson,Pall Jakobsson,Nestor Mirabal,Darach Watson,Dong Xu,A. J. Castro-Tirado,C. Feron,Andreas O. Jaunsen,Martin Jelínek,B. L. Jensen,D. A. Kann,J. E. Ovaldsen,A. Pozanenko,Maximilian Stritzinger,Christina C. Thöne,A. de Ugarte Postigo,S. Guziy,Mansur Ibrahimov,S. P. Järvinen,Andrew J. Levan,V. Rumyantsev,Nial R. Tanvir,Nial R. Tanvir +27 more
TL;DR: In this article, photometric R-band observations of the fading optical afterglow of XRF 050824, from 11 min to 104 days after the burst are presented.
GRB 070306: A Highly Extinguished Afterglow
Andreas O. Jaunsen,Evert Rol,Darach Watson,D. Malesani,Johan P. U. Fynbo,Bo Milvang-Jensen,Jens Hjorth,Paul Vreeswijk,J. E. Ovaldsen,Klaas Wiersema,Nial R. Tanvir,Javier Gorosabel,Andrew J. Levan,M. Schirmer,A. J. Castro-Tirado +14 more
TL;DR: In this article, the authors report on the highly extinguished afterglow of GRB 070306 and the properties of the host galaxy, and derive A_V = 5.5 +- 0.00006.
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