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259 papers · 1 filter
VTXO: The Virtual Telescope for X-ray Observations
John F. Krizmanic, Neerav Shah, Philip C. Calhoun +12
The Virtual Telescope for X-ray Observations (VTXO) will use lightweight Phase Fresnel Lenses (PFLs) in a virtual X-ray telescope with 1 km focal length and with 50 mil…
Timing of Eight Binary Millisecond Pulsars Found with Arecibo in Fermi-LAT Unidentified Sources
J. S. Deneva, P. S. Ray, F. Camilo +7
We present timing solutions for eight binary millisecond pulsars (MSPs) discovered by searching unidentified Fermi-LAT source positions with the 327 MHz receiver of the Arecibo 305…
HAZMAT. VII. The Evolution of Ultraviolet Emission with Age and Rotation for Early M Dwarf Stars
R. O. Parke Loyd, Evgenya L. Shkolnik, Adam C. Schneider +6
The ultraviolet (UV) emission from the most numerous stars in the universe, M dwarfs, impacts the formation, chemistry, atmospheric stability, and surface habitability of their pla…
Phase Modeling of the TRAPPIST-1 Planetary Atmospheres
Stephen R. Kane, Tiffany Jansen, Thomas Fauchez +2
Transiting compact multi-planet systems provide many unique opportunities to characterize the planets, including studies of size distributions, mean densities, orbital dynamics, an…
The X-ray bursts of XTE J1739-285: a NICER sample
Peter Bult, Diego Altamirano, Zaven Arzoumanian +10
In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 F…
An X-ray spectral study of the origin of reflection features in bare Seyfert 1 galaxy ESO 511--G030
Ritesh Ghosh, Sibasish Laha
The reprocessed X-ray emission from Active Galactic Nuclei (AGN) is an important diagnostic tool to study the dynamics and geometry of the matter surrounding the supermassive black…