239 citations · 903 across the 36 of their papers we have counts for
35 papers
Quasi periodic whispers from a transient ULX in M\,101: signatures of a fast-spinning neutron star?
Ryan T. Urquhart, Roberto Soria, Rosanne Di Stefano +7
We have studied the unusual time variability of an ultraluminous X-ray source in M 101, 4XMM J140314.2541806 (henceforth, J1403), using Chandra and XMM-Newton data. Over the las…
M51-ULS-1b: The First Candidate for a Planet in an External Galaxy
R. Di Stefano, Julia Berndtsson, Ryan Urquhart +4
Do external galaxies host planetary systems? Many lines of reasoning suggest that the answer must be 'yes'. In the foreseeable future, however, the question cannot be answered by t…
Spikey: Self-Lensing Flares from Eccentric SMBH Binaries
Betty X. Hu, Daniel J. D'Orazio, Zoltan Haiman +4
We examine the light curves of two quasars, motivated by recent suggestions that a supermassive black hole binary (SMBHB) can exhibit sharp lensing spikes. We model the variability…
CG X-1: an eclipsing Wolf-Rayet ULX in the Circinus galaxy
Yanli Qiu, Roberto Soria, Song Wang +7
We investigated the time-variability and spectral properties of the eclipsing X-ray source Circinus Galaxy X-1 (GG X-1), using Chandra, XMM-Newton and ROSAT. We phase-connected the…
The Role of Machine Learning in the Next Decade of Cosmology
Michelle Ntampaka, Camille Avestruz, Steven Boada +27
In recent years, machine learning (ML) methods have remarkably improved how cosmologists can interpret data. The next decade will bring new opportunities for data-driven cosmologic…
Unique Science from a Coordinated LSST-WFIRST Survey of the Galactic Bulge
R. A. Street, M. B. Lund, M. Donachie +19
NASA's WFIRST mission will perform a wide-field, NIR survey of the Galactic Bulge to search for exoplanets via the microlensing techniques. As the mission is due to launch in the m…