Stellar-mass primordial black holes (PBHs) from the early Universe can directly contribute to the gravitational wave (GW) events observed by LIGO, but can only comprise a subdominant component of the dark matter (DM). The primary DM constituent wi...
Patrick L. Kelly   Steven Rodney   Tommaso Treu   Masamune Oguri   Wenlei Chen   Adi Zitrin   Simon Birrer   Vivien Bonvin   Luc Dessart   Jose M. Diego   Alexei V. Filippenko   Ryan J. Foley   Daniel Gilman   Jens Hjorth   Mathilde Jauzac   Kaisey Mandel   Martin Millon   Justin Pierel   Keren Sharon   Stephen Thorp   Liliya Williams   Tom Broadhurst   Alan Dressler   Or Graur   Saurabh Jha   Curtis McCully   Marc Postman   Kasper Borello Schmidt   Brad E. Tucker   Anja von der Linden   
Science 380(6649) abh1322 2023年6月
The gravitationally lensed supernova Refsdal appeared in multiple images produced through gravitational lensing by a massive foreground galaxy cluster. After the supernova appeared in 2014, lens models of the galaxy cluster predicted that an addit...
Alfred Amruth   Tom Broadhurst   Jeremy Lim   Masamune Oguri   George F. Smoot   Jose M. Diego   Enoch Leung   Razieh Emami   Juno Li   Tzihong Chiueh   Hsi Yu Schive   Michael C.H. Yeung   Sung Kei Li   
Nature Astronomy 7(6) 736-747 2023年6月
Unveiling the true nature of dark matter, which manifests itself only through gravity, is one of the principal quests in physics. Leading candidates for dark matter are weakly interacting massive particles or ultralight bosons (axions), at opposit...
Galaxy mergers produce pairs of supermassive black holes (SMBHs), which may be witnessed as dual quasars if both SMBHs are rapidly accreting. The kiloparsec (kpc)-scale separation represents a physical regime sufficiently close for merger-induced ...
Hayley Williams   Patrick L. Kelly   Wenlei Chen   Gabriel Brammer   Adi Zitrin   Tommaso Treu   Claudia Scarlata   Anton M. Koekemoer   Masamune Oguri   Yu Heng Lin   Jose M. Diego   Mario Nonino   Jens Hjorth   Danial Langeroodi   Tom Broadhurst   Noah Rogers   Ismael Perez-Fournon   Ryan J. Foley   Saurabh Jha   Alexei V. Filippenko   Lou Strolger   Justin Pierel   Frederick Poidevin   Lilan Yang   
Science 380(6643) 416-420 2023年4月
Ultraviolet light from early galaxies is thought to have ionized gas in the intergalactic medium. However, there are few observational constraints on this epoch because of the faintness of those galaxies and the redshift of their optical light int...