M
M. Malkan
Researcher at University of California, Los Angeles
Publications - 36
Citations - 4249
M. Malkan is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 18, co-authored 36 publications receiving 3857 citations.
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Journal ArticleDOI
Central masses and broad-line region sizes of active galactic nuclei. ii. a homogeneous analysis of a large reverberation-mapping database
Bradley M. Peterson,Laura Ferrarese,Karoline M. Gilbert,Karoline M. Gilbert,Shai Kaspi,Shai Kaspi,M. Malkan,D. Maoz,David Merritt,Hagai Netzer,Christopher A. Onken,Richard W. Pogge,Marianne Vestergaard,Amri Wandel +13 more
TL;DR: In this article, a reanalysis of broad emission-line reverberation-mapping data was carried out for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis, and it was shown that the highest precision measure of the virial product cτΔV2/G is obtained by using the cross-correlation function centroid (cf.
Journal ArticleDOI
Intergalactic Photon Spectra from the Far-IR to the UV Lyman Limit for 0 < z < 6 and the Optical Depth of the Universe to High-Energy Gamma Rays
TL;DR: In this article, the optical depth of the universe to gamma-rays; tau; and tau coefficient were incorrectly calculated for various redshifts for the baseline model (upper row) and fast evolution (lower row) for individual redshift.
Journal ArticleDOI
The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999
[No Value] Kulkarni,S. G. Djorgovski,Stephen C. Odewahn,Joshua S. Bloom,Roy R. Gal,Christopher D. Koresko,Fiona A. Harrison,Lori M. Lubin,Lee Armus,Re'em Sari,Garth D. Illingworth,D. D. Kelson,Dan Magee,P. G. van Dokkum,Dale A. Frail,John S. Mulchaey,M. Malkan,IS McClean,Harry I. Teplitz,David W. Koerner,D. Kirkpatrick,N. Kobayashi,I. A. Yadigaroglu,Jules P. Halpern,Tsvi Piran,Robert W. Goodrich,Frederic H. Chaffee,M. Feroci,Enrico Costa +28 more
TL;DR: In this article, optical and near-infrared observations of the afterglow of GRB990123 were presented, and a redshift of z ⩾ 1.6 was determined.
Journal ArticleDOI
BVRI Light Curves for 29 Type Ia Supernovae
Mario Hamuy,M. M. Phillips,N. B. Suntzeff,R. A. Schommer,José Maza,R. Antezana,M. Wischnjewsky,G. Valladares,Cesar Muena,L. E. Gonzalez,R. Aviles,L. Wells,Robert Connon Smith,M. Navarrete,Ricardo Covarrubias,Gerard M. Williger,Alistair R. Walker,Andrew C. Layden,J. H. Elias,Jack A. Baldwin,M. Hernandez,H. Tirado,P. Ugarte,Richard Elston,N. Saavedra,F. Barrientos,Edgardo Costa,P. Lira,Maria Teresa Ruiz,Claudio Anguita,X. Gomez,P. Ortiz,Massimo DellaValle,J Danziger,Jesper Storm,Yong-Cheol Kim,Charles D. Bailyn,Eric P. Rubenstein,Douglas L. Tucker,S. Cersosimo,Rene A. Mendez,L. Siciliano,W. H. Sherry,Brian Chaboyer,R. A. Koopmann,Doug Geisler,A. Sarajedini,Arjun Dey,Neil De Grasse Tyson,R. M. Rich,R. Gal,Robert Lamontagne,Nelson Caldwell,Puragra Guhathakurta,Andrew C. Phillips,Paula Szkody,Charles F. Prosser,L. C. Ho,R. McMahan,G. Baggley,K. P. Cheng,R. Havlen,K. Wakamatsu,K. Janes,M. Malkan,F. K. Baganoff,Patrick Seitzer,Michael M. Shara,C. R. Sturch,James E. Hesser,Patrick Hartigan,J Hughes,Douglas L. Welch,T. B. Williams,Henry C. Ferguson,Paul Francis,L. French,Michael Bolte,Joshua Roth,S. C. Odewahn,Steve B. Howell,Wojtek Krzeminski +81 more
TL;DR: In this article, M.M.H. and M.J.C. acknowledge support provided for this work by the National Science Foundation through grant number======GF-1002-96 from the Association of Universities for Research in Astronomy, Inc., under NSF Cooperative Agreement No. AST-8947990 and from Fundacion Andes under======Project C-12984.
Journal ArticleDOI
The WARPS X-ray survey of galaxies, groups and clusters I: Method and first results
TL;DR: In this paper, a survey of ROSAT PSPC archival data with the aim of detecting all significant surface brightness enhancements due to sources in the innermost 15 arcmin of the PSPC field of view (0.5-2.0 keV).