Výsledky vyhledávání - "J. E. Ovaldsen"

A Search for Host Galaxies of 24 Gamma‐Ray Bursts

Autor: C. Feron, C. C. Thoene, Jens Hjorth, J. H. Selj, Johan P. U. Fynbo, Andreas O. Jaunsen, J. Teuber, J. E. Ovaldsen, D. Xu

Publikováno v: University of Copenhagen

We report the results from observations of 24 gamma ray burst (GRB) fields from 2005 and 2006 undertaken at the Danish 1.54m telescope at ESO/La Silla. Photometry and positions for two previously unpublished host galaxy candidates (GRBs 050915 and 05

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af15376975be069b6cebac73dac6caab
https://doi.org/10.1086/517962

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The nature of the X-ray flash of August 24 2005

Publikováno v: Astronomy & Astrophysics. 466:839-846

Aims. Our aim is to investigate the nature of the X-Ray Flash (XRF) of August 24, 2005. Methods. We present comprehensive photometric R-band observations of the fading optical afterglow of XRF 050824, from 11 min to 104 days after the burst. In addit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63f66516b1d47438946eae3d37365abf
https://doi.org/10.1051/0004-6361:20066683

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Five nights of intensiveR- andV-band photometry of QSO 0957+561A,B

Autor: R. Stabell, Anna Evans, J. Teuber, J. E. Ovaldsen

Publikováno v: Monthly Notices of the Royal Astronomical Society. 345:795-799

We present R- and V-band photometry of the gravitational lens system QSO 0957+561 from five nights (one in 2000 January and four in 2001 March, corresponding to the approximate time-delay for the system) of uninterrupted monitoring at the Nordic Opti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::237b9bd8f73d8378dc803fb027146a77
https://doi.org/10.1046/j.1365-8711.2003.06989.x

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The Afterglows of Swift-era Gamma-ray Bursts. I. Comparing pre-Swift and Swift-era Long/Soft (Type II) GRB Optical Afterglows

Autor: L. A. Antonelli, J. M. Castro Cerón, J. E. Ovaldsen, Sylvio Klose, R. Karimov, Silvia Piranomonte, Elena P. Pavlenko, P. D'Avanzo, Johan P. U. Fynbo, Filippo Mannucci, D. B. Malesani, Sergei Guziy, Markus Böttcher, M. Jeĺinek, A. J. Castro-Tirado, Valerio D'Elia, M. Della Valle, Yu. S. Efimov, Andrew J. Levan, Ü. Kızıloǧlu, Mansur Ibrahimov, D. Paraficz, David Alexander Kann, M. Gålfalk, A. Sergeev, Alexander Kutyrev, Vasilij Rumyantsev, C. M. Martin, Ehud Nakar, Adria C. Updike, Jesper Sollerman, F. Grundahl, Gianpiero Tagliaferri, Steve Schulze, S. Gupta, J. Telting, Luigi Stella, R. A. Burenin, A. Pozanenko, Irek Khamitov, Darach Watson, Nestor Mirabal, Bringfried Stecklum, Peter Laursen, A. de Ugarte Postigo, Nathaniel R. Butler, R. Salinas, B. E. Cobb, Javier Gorosabel, I. F. Bikmaev, Andrea Rossi, G. Chincarini, A. C. Wilson, Jay P. Norris, Dong Xu, Bing Zhang, A. Volnova, Maksim V. Andreev, P. Ferrero, Nial R. Tanvir, Myungshin Im, Pall Jakobsson, Klaas Wiersema, Vincenzo Testa, Petr Kubánek, K. Holhjem, G. L. Israel, B. L. Jensen, E. Klunko, A. Mescheryakov, B. M. Hafizov, Dino Fugazza, Stefano Covino, V. Biryukov, Jens Hjorth, D. Sharapov

Publikováno v: Astrophysical Journal
Artículos CONICYT
CONICYT Chile
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We have gathered 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 present an additional three pre-Swift GRBs not included in a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10c10dd25aef19fb78c68b796f7de1bb

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GRB 070306: A Highly Extinguished Afterglow

Autor: Andreas O. Jaunsen, A. J. Castro-Tirado, Darach Watson, Andrew J. Levan, Johan P. U. Fynbo, J. E. Ovaldsen, Nial R. Tanvir, Klaas Wiersema, Bo Milvang-Jensen, Javier Gorosabel, Jens Hjorth, Paul Vreeswijk, D. Malesani, M. Schirmer, Evert Rol

We report on the highly extinguished afterglow of GRB 070306 and the properties of the host galaxy. An optical afterglow was not detected at the location of the burst, but in near-infrared a doubling in brightness during the first night and later pow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b247473bdf546e1d9de9d151a10b80f
http://arxiv.org/abs/0803.4017

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Supernova 2006aj and the associated X-Ray Flash 060218

We have studied the afterglow of the gamma-ray burst (GRB) of February 18, 2006. This is a nearby long GRB, with a very low peak energy, and is therefore classified as an X-ray Flash (XRF). XRF 060218 is clearly associated with a supernova -- dubbed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::893abf133b6167a050763ca852cd059e
http://arxiv.org/abs/astro-ph/0603495

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New aperture photometry of QSO 0957+561; application to time delay and microlensing

Autor: R. Stabell, Rudolph E. Schild, J. E. Ovaldsen, J. Teuber

We present a re-reduction of archival CCD frames of the doubly imaged quasar 0957+561 using a new photometry code. Aperture photometry with corrections for both cross contamination between the quasar images and galaxy contamination is performed on ab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93a57b7f8ed5d1a7a4e4580e352a39b
http://arxiv.org/abs/astro-ph/0308397

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