Results 1 to 10 of about 70,469 (251)
The near ultraviolet transient surveyor (NUTS): An ultraviolet telescope to observe variable sources [PDF]
Experimental Astronomy, 2022 Observing the ultraviolet (UV) sky for time-variable phenomena is one of the many exciting science goals that can be achieved by a relatively small aperture telescope in space. The Near Ultraviolet Transient Surveyor (NUTS) is a wide-field ($3^\circ$) imager with a photon-counting detector in the near-UV (NUV, 200-300 nm), to be flown on an upcoming ...
S. Ambily +11 more
openalex +4 more sources
Searching EUVE Data for Transient/Flaring Extreme Ultraviolet Sources [PDF]
International Astronomical Union Colloquium, 1996 The Extreme Ultraviolet Explorer (EUVE), because of its sky survey strategy, performed two observations of each point along a 180° by 1° strip of the ecliptic during the initial survey phase of the mission. One observation used the deep survey telescope, and another, 90 days earlier or later, used the all sky scanner telescopes, two of which have a ...
James W. Lewis +4 more
openalex +2 more sources
A Swift Response to Newly Discovered, Nearby Transients
Universe, 2023 The Neil Gehrels Swift Observatory has proven to be an extraordinary supernova (SN) observatory. The clearest application of Swift’s unique strengths is obtaining very early UV and X-ray data of young SNe, which enables robust constraints on their ...
Peter J. Brown +5 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Stars that interact with supermassive black holes (SMBHs) can be either completely or partially destroyed by tides. In a partial tidal disruption event (TDE), the high-density core of the star remains intact, and the low-density outer envelope of the ...
T. Wevers +15 more
doaj +1 more source
SN 2022acko: The First Early Far-ultraviolet Spectra of a Type IIP Supernova
The Astrophysical Journal Letters, 2023 We present five far- and near-ultraviolet spectra of the Type II plateau supernova, SN 2022acko, obtained 5, 6, 7, 19, and 21 days after explosion, all observed with the Hubble Space Telescope/Space Telescope Imaging Spectrograph.
K. Azalee Bostroem +43 more
doaj +1 more source
Intermediate Palomar Transient Factory: Realtime Image Subtraction Pipeline [PDF]
, 2016 A fast-turnaround pipeline for realtime data reduction plays an essential role in discovering and permitting follow-up observations to young supernovae and fast-evolving transients in modern time-domain surveys.
Cao, Yi +2 more
core +2 more sources
Core-collapse Supernova Explosions in Active Galactic Nucleus Accretion Disks
The Astrophysical Journal, 2023 Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium.
Fu-Lin Li +6 more
doaj +1 more source
A Tidal Flare Candidate in Abell 1795 [PDF]
, 2013 As part of our ongoing archival X-ray survey of galaxy clusters for tidal flares, we present evidence of an X-ray transient source within 1 arcmin of the core of Abell 1795. The extreme variability (a factor of nearly 50), luminosity (> 2 x 10^42 erg s^{-
Eracleous, M. C. +4 more
core +3 more sources
Ultrafast Dynamics of Excited Electronic States in Nitrobenzene Measured by Ultrafast Transient Polarization Spectroscopy. [PDF]
, 2019 We investigate ultrafast dynamics of the lowest singlet excited electronic state in liquid nitrobenzene using ultrafast transient polarization spectroscopy, extending the well-known technique of optical Kerr effect spectroscopy to excited electronic ...
Bakhti, Said +9 more
core +2 more sources
Multiwavelength spectral evolution during the 2011 outburst of the very faint X-ray transient Swift J1357.2-0933 [PDF]
, 2012 We report our multiwavelength study of the 2011 outburst evolution of the newly discovered black hole candidate X-ray binary Swift J1357.2-0933. We analysed the Swift X-ray telescope and Ultraviolet/Optical telescope (UVOT) data taken during the ~7 ...
Armas Padilla +32 more
core +2 more sources