154 citations · 583 across the 21 of their papers we have counts for
21 papers
Cataclysmic Variables and AM CVn Binaries in SRG/eROSITA + Gaia: Volume Limited Samples, X-ray Luminosity Functions, and Space Densities
Antonio C. Rodriguez, Kareem El-Badry, Valery Suleimanov +22
We present volume-limited samples of cataclysmic variables (CVs) and AM CVn binaries jointly selected from SRG/eROSITA eRASS1 and \textit{Gaia} DR3 using an X-ray + optical color-c…
Ultraviolet spectroscopy of the supernova Ia hypervelocity runaway white dwarf J0927-6335
Klaus Werner, Kareem El-Badry, Boris T. Gänsicke +1
The hot white dwarf (WD) J0927-6335 (Gaia DR3 5250394728194220800, effective temperature T = 60,000 K, surface gravity log g = 7) was detected as the fastest known Gala…
Searching for New Cataclysmic Variables in the Chandra Source Catalog
Ilkham Galiullin, Antonio C. Rodriguez, Kareem El-Badry +14
Cataclysmic variables (CVs) are compact binary systems in which a white dwarf accretes matter from a Roche-lobe-filling companion star. In this study, we searched for new CVs in th…
The Symbiotic X-ray Binary IGR J16194-2810: A Window on the Future Evolution of Wide Neutron Star Binaries From Gaia
Pranav Nagarajan, Kareem El-Badry, Casey Lam +1
We present optical follow-up of IGR J16194-2810, a hard X-ray source discovered by the INTEGRAL mission. The optical counterpart is a red giant at a distance of…
Validation of Gaia DR3 orbital and acceleration solutions with hierarchical triples
Pranav Nagarajan, Kareem El-Badry
Using data from Gaia DR3, we construct a sample of 14,791 gravitationally bound wide pairs in which one of the components is an unresolved binary with an astrometric orbital or acc…
The black hole low mass X-ray binary V404 Cygni is part of a wide hierarchical triple, and formed without a kick
Kevin B. Burdge, Kareem El-Badry, Erin Kara +7
Evidence suggests that when compact objects such as black holes and neutron stars form, they may receive a ``natal kick,'' where the stellar remnant gains momentum. Observational e…