D. Paraficz
University of Copenhagen
12 Papers
181 Citations
D. Paraficz is an academic researcher from University of Copenhagen. The author has contributed to research in topics: Galaxy & Gravitational lens. The author has an hindex of 9, co-authored 12 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.
Extinction Curves of Lensing Galaxies out to z = 1
TL;DR: In this article, the extinction properties of 10 lensing galaxies, in the redshift range z = 0.04-1.01, using multiply lensed quasars imaged with the ESO VLT in the optical and near-infrared.
Gravitational lenses as cosmic rulers: density of dark matter and dark energy from time delays and velocity dispersions
D. Paraficz,Jens Hjorth +1 more
TL;DR: In this paper, a cosmic standard ruler can be constructed from the joint measurement of the time delay between gravitationally lensed quasar images and the velocity dispersion (sigma^2) of the lensing galaxy.
The Hubble Constant Inferred from 18 Time-delay Lenses
D. Paraficz,Jens Hjorth +1 more
TL;DR: In this paper, the authors present a simultaneous analysis of 18 galaxy lenses with time-delay measurements, and derive mass maps using pixelated simultaneous modeling with a shared Hubble constant, and estimate the Hubble constant to be 66+6 −4 km s−1 Mpc
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The Hubble constant inferred from 18 time-delay lenses
D. Paraficz,Jens Hjorth +1 more
TL;DR: In this article, the authors present a simultaneous analysis of 18 galaxy lenses with time delay measurements and derive mass maps using pixelated simultaneous modeling with a shared Hubble constant, and estimate the Hubble constant to be 66.4 + 6.6 km/s/Mpc.
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