% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Shvartzvald:620284, author = {Shvartzvald, Y. and Waxman, E. and Gal-Yam, A. and Ofek, E. O. and Ben-Ami, S. and Berge, David and Kowalski, Marek and Bühler, R. and Worm, S. and Rhoads, J. E. and Arcavi, I. and Maoz, D. and Polishook, D. and Stone, N. and Trakhtenbrot, B. and Ackermann, Markus and Aharonson, O. and Birnholtz, O. and Chelouche, D. and Guetta, D. and Hallakoun, N. and Horesh, A. and Kushnir, D. and Mazeh, T. and Nordin, J. and Ofir, A. and Ohm, S. and Parsons, D. and Pe’er, A. and Perets, H. B. and Perdelwitz, V. and Poznanski, D. and Sadeh, I. and Sagiv, I. and Shahaf, S. and Soumagnac, M. and Tal-Or, L. and Santen, J. Van and Zackay, B. and Guttman, O. and Rekhi, P. and Townsend, A. and Weinstein, A. and Wold, I.}, title = {{ULTRASAT}: {A} {W}ide-field {T}ime-domain {UV} {S}pace {T}elescope}, journal = {The astrophysical journal / Part 1}, volume = {964}, number = {1}, issn = {0004-637X}, address = {London}, publisher = {Institute of Physics Publ.}, reportid = {PUBDB-2025-00118, arXiv:2304.14482}, pages = {74}, year = {2024}, note = {40 pages, 16 figures, 3 tables. Submitted to the AAS journals}, abstract = {The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2027. It will carry a telescope with an unprecedentedly large field of view (204 deg$^2$) and near-ultraviolet (NUV; 230–290 nm) sensitivity (22.5 mag, 5σ, at 900 s). 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 timescale (months-long light curves with minutes cadence), with an extragalactic volume accessible for the discovery of transient sources that is >300 times larger than that of the Galaxy Evolution Explorer (GALEX) and comparable to that of the Vera Rubin Observatory’s Legacy Survey of Space and Time. ULTRASAT data will be transmitted to the ground in real time, and transient alerts will be distributed to the community in <15 minutes, enabling 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\%) of the sky instantaneously accessible, fast (minutes) slewing capability, and a field of view that covers the error ellipses expected from gravitational-wave (GW) detectors beyond 2026, ULTRASAT will rapidly detect the electromagnetic emission following binary neutron star/neutron star–black hole mergers identified by GW detectors, and will provide continuous NUV light curves of the events. ULTRASAT will provide early (hour) detection and continuous high-cadence (minutes) NUV light curves for hundreds of core-collapse supernovae, including for rarer supernova progenitor types.}, cin = {$Z_GA$}, ddc = {520}, cid = {$I:(DE-H253)Z_GA-20210408$}, pnm = {613 - Matter and Radiation from the Universe (POF4-613) / Fireworks - Celestial fireworks: revealing the physics of the time-variable sky (725161)}, pid = {G:(DE-HGF)POF4-613 / G:(EU-Grant)725161}, experiment = {EXP:(DE-H253)ULTRASAT-20211201}, typ = {PUB:(DE-HGF)16}, eprint = {2304.14482}, howpublished = {arXiv:2304.14482}, archivePrefix = {arXiv}, SLACcitation = {$\%\%CITATION$ = $arXiv:2304.14482;\%\%$}, UT = {WOS:001186797100001}, doi = {10.3847/1538-4357/ad2704}, url = {https://bib-pubdb1.desy.de/record/620284}, }