%0 Electronic Article
%A Shvartzvald, Y.
%A Waxman, E.
%A Gal-Yam, A.
%A Ofek, E. O.
%A Ben-Ami, S.
%A Berge, D.
%A Kowalski, Marek
%A Bühler, Rolf
%A Worm, S.
%A Rhoads, J. E.
%A Arcavi, I.
%A Maoz, D.
%A Polishook, D.
%A Stone, N.
%A Trakhtenbrot, B.
%A Ackermann, Markus
%A Aharonson, O.
%A Birnholtz, O.
%A Chelouche, D.
%A Guetta, D.
%A Hallakoun, N.
%A Horesh, A.
%A Kushnir, D.
%A Mazeh, T.
%A Nordin, J.
%A Ofir, A.
%A Ohm, S.
%A Parsons, D.
%A Pe'er, A.
%A Perets, H. B.
%A Perdelwitz, V.
%A Poznanski, D.
%A Sadeh, I.
%A Sagiv, I.
%A Shahaf, S.
%A Soumagnac, M.
%A Tal-Or, L.
%A Van Santen, J.
%A Zackay, B.
%A Guttman, O.
%A Rekhi, P.
%A Townsend, A.
%A Weinstein, A.
%A Wold, I.
%T ULTRASAT: A wide-field time-domain UV space telescope
%N arXiv:2304.14482
%M PUBDB-2023-08030
%M arXiv:2304.14482
%D 2023
%Z 40 pages, 16 figures, 3 tables. Submitted to the AAS journals
%X The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2026. It will carry a telescope with an unprecedentedly large field of view (204 deg<sup>2</sup>) and NUV (230-290nm) sensitivity (22.5 mag, 5σ, at 900s). ULTRASAT will conduct the first wide-field survey of transient and variable NUV sources and will revolutionize our ability to study the hot transient universe: It will explore a new parameter space in energy and time-scale (months long light-curves with minutes cadence), with an extra-Galactic volume accessible for the discovery of transient sources that is  > 300 times larger than that of GALEX and comparable to that of LSST. ULTRASAT data will be transmitted to the ground in real-time, and transient alerts will be distributed to the community in  < 15 min, enabling a vigorous ground-based follow-up of ULTRASAT sources. ULTRASAT will also provide an all-sky NUV image to  > 23.5 AB mag, over 10 times deeper than the GALEX map. Two key science goals of ULTRASAT are the study of mergers of binaries involving neutron stars, and supernovae: With a large fraction ( > 50
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.3204/PUBDB-2023-08030
%U https://bib-pubdb1.desy.de/record/600606