Search Publications
Hard X-ray cataclysmic variables
Mukai, K.; de Martino, D.; Masetti, N. +2 more
Among hard X-ray Galactic sources detected with the Swift and INTEGRAL surveys, those discovered as accreting white dwarf binaries have surprisingly boosted in number in the recent years. The majority are identified as magnetic Cataclysmic Variables of the Intermediate Polar type, suggesting this subclass as an important constituent of the Galacti…
Radio observations of magnetic cataclysmic variables
Mason, Paul A.; Singh, Kulinder P.; Barrett, Paul +2 more
The NSF's Karl G. Jansky Very Large Array (VLA) is used to observe 122 magnetic cataclysmic variables (MCVs) during three observing semesters (13B, 15A, and 18A). We report radio detections of 33 stars with fluxes in the range 6-8031 µJy. Twenty-eight stars are new radio sources, increasing the number of radio detected MCVs to more that 40. …
On a century of extragalactic novae and the rise of the rapid recurrent novae
Darnley, Matthew J.; Henze, Martin
Novae are the observable outcome of a transient thermonuclear runaway on the surface of an accreting white dwarf in a close binary system. Their high peak luminosity renders them visible in galaxies out beyond the distance of the Virgo Cluster. Over the past century, surveys of extragalactic novae, particularly within the nearby Andromeda Galaxy, …
Space debris observations with the Slovak AGO70 telescope: Astrometry and light curves
Šilha, Jiří; Krajčovič, Stanislav; Zigo, Matej +12 more
The Faculty of Mathematics, Physics and Informatics of Comenius University in Bratislava, Slovakia (FMPI) operates its own 0.7-m Newtonian telescope (AGO70) dedicated to the space surveillance tracking and research, with an emphasis on space debris. The observation planning focuses on objects on geosynchronous (GEO), eccentric (GTO and Molniya) an…
Gaia: The Galaxy in six (and more) dimensions
Pancino, Elena
The ESA cornerstone mission Gaia was successfully launched in 2013, and is now scanning the sky to accurately measure the positions and motions of about two billion point-like sources of 3 ≲ V ≲ 20.5 mag, with the main goal of reconstructing the 6D phase space structure of the Milky Way. The typical uncertainties in the astrometry will be in the r…