Results 31 to 40 of about 166,732 (180)

Near-ultraviolet detections of four dwarf nova candidates in the globular cluster 47 Tucanae [PDF]

Astronomy & Astrophysics, 2020
We investigate near-ultraviolet variability in the Galactic globular cluster (GC) 47 Tucanae (47 Tuc). This work was undertaken within the GC sub-project of the Transient UV Objects project, a programme which aims to find and study transient and strongly
D. Modiano, A. Parikh, R. Wijnands
semanticscholar   +1 more source

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, Barthelmy, Belloni, Burrows, Casares, Chelovekov, Corbel, Cornelisse, D. M. Russell, Degenaar, Del Santo, Dunn, Evans, Frank, Gehrels, Gehrels, Jonker, Jonker, Kalemci, Krimm, Krimm, M. Armas Padilla, Makishima, N. Degenaar, Pei, R. Wijnands, Rau, Roming, Russell, Schlegel, Tomsick, Wijnands, Wijnands   +32 more
core   +2 more sources

THE GALEX TIME DOMAIN SURVEY. I. SELECTION AND CLASSIFICATION OF OVER A THOUSAND ULTRAVIOLET VARIABLE SOURCES [PDF]

, 2013
We present the selection and classification of over a thousand ultraviolet (UV) variable sources discovered in ∼40 deg2 of GALEX Time Domain Survey (TDS) NUV images observed with a cadence of 2 days and a baseline of observations of ∼3 years.
S. Gezari, D. C. Martin, K. Forster, J. Neill, M. Huber, T. Heckman, L. Bianchi, P. Morrissey, S. Neff, M. Seibert, D. Schiminovich, T. Wyder, W. Burgett, K. Chambers, N. Kaiser, E. Magnier, P. Price, J. Tonry   +17 more
semanticscholar   +1 more source

The digital data processing concepts of the LOFT mission

, 2014
The Large Observatory for X-ray Timing (LOFT) is one of the five mission candidates that were considered by ESA for an M3 mission (with a launch opportunity in 2022 - 2024).
Argan, A., Cros, A., Favre, Y., Gschwender, M., Jetter, F., Santangelo, A., Schanne, S., Smith, P., Suchy, S., Tenzer, C., Uter, P., Walton, D., Wende, H.   +12 more
core   +1 more source

Few-Femtosecond Dynamics of Free-Free Opacity in Optically Heated Metals

Physical Review X, 2022
Interaction of light with an excited free-electron gas is a fundamental process spanning a large variety of fields in physics. The advent of femtosecond laser pulses and extreme-ultraviolet sources allowed one to put theoretical models to the test ...
A. Niedermayr, M. Volkov, S. A. Sato, N. Hartmann, Z. Schumacher, S. Neb, A. Rubio, L. Gallmann, U. Keller   +8 more
doaj   +1 more source

First results from the TUS orbital detector in the extensive air shower mode

, 2017
TUS (Tracking Ultraviolet Set-up), the first orbital detector of extreme energy cosmic rays (EECRs), those with energies above 50 EeV, was launched into orbit on April 28, 2016, as a part of the Lomonosov satellite scientific payload. The main aim of the
Biktemerova, S. V., Botvinko, A. A., Chirskaya, N. P., Eremeev, V. E., Garipov, G. K., Grebenyuk, V. M., Grinyuk, A. A., Jeong, S., Kalmykov, N. N., Khrenov, B. A., Kim, M., Klimov, P. A., Lavrova, M. V., Lee, J., Martinez, O., Panasyuk, M. I., Park, I. H., Petrov, V. L., Ponce, E., Puchkov, A. E., Salazar, H., Saprykin, O. A., Senkovsky, A. N., Sharakin, S. A., Shirokov, A. V., Tkachenko, A. V., Tkachev, L. G., Yashin, I. V., Zotov, M. Yu.   +28 more
core   +1 more source

LEMUR: Large European Module for solar Ultraviolet Research. European contribution to JAXA's Solar-C mission [PDF]

, 2011
Understanding the solar outer atmosphere requires concerted, simultaneous solar observations from the visible to the vacuum ultraviolet (VUV) and soft X-rays, at high spatial resolution (between 0.1" and 0.3"), at high temporal resolution (on the order ...
A Bhattacharjee, AA Ballegooijen van, AH Gabriel, Andrzej Fludra, AS Krieger, B Pontieu De, B Pontieu De, B Pontieu De, Berend Winter, Bernhard Kliem, C Tu, Charles M. Brown, CJ Schrijver, Clarence Korendyke, D Banerjee, Daniele Spadaro, Davina Innes, DE Innes, Eric Buchlin, Frédéric Auchère, G Zanna Del, G Zanna Del, G Zanna Del, GA Doschek, GDR Attrill, George A. Doschek, Gianna Cauzzi, Giulio Del Zanna, Hardi Peter, Harry P. Warren, Hector Socas-Navarro, HP Warren, J. Len Culhane, Javier Trujillo-Bueno, Jean-Claude Vial, JK Edmondson, John T. Mariska, Joseph M. Davila, JT Mariska, JW Cirtain, K Wilhelm, L Teriaca, L Teriaca, LK Harra, LM Green, Louise K. Harra, Luca Poletto, Luca Teriaca, Lucie Green, Martin Siemer, MJ Aschwanden, P Bryans, Peter T. Gallagher, Peter Young, Robert J. Rutten, Robert Walsh, S Tsuneta, Saku Tsuneta, Sami K. Solanki, Santiago Vargas Dominguez, Shinsuke Imada, Silvano Fineschi, Spiros Patsourakos, Susanna Parenti, T Wang, T Wiegelmann, Thomas Wiegelmann, Toshifumi Shimizu, Udo Schühle, Valentin Martínez-Pillet, Vincenzo Andretta, W Manchester IV, Werner Curdt, Y Wang   +73 more
core   +2 more sources

The Effect of the Velocity Distribution on Kilonova Emission

The Astrophysical Journal
The electromagnetic emission from the nonrelativistic ejecta launched in neutron star mergers (either dynamically or through a disk wind) has the potential to probe both the total mass and composition of this ejecta.
Chris L. Fryer, Aimee L. Hungerford, Ryan T. Wollaeger, Jonah M. Miller, Soumi De, Christopher J. Fontes, Oleg Korobkin, Atul Kedia, Marko Ristic, Richard O’Shaughnessy   +9 more
doaj   +1 more source

Optical Appearance of Eccentric Tidal Disruption Events

The Astrophysical Journal Letters
Stars approaching supermassive black holes can be tidally disrupted. Despite being expected to emit X-rays, tidal disruption events (TDEs) have been largely observed in optical bands, which is poorly understood.
Fangyi (Fitz) Hu, Daniel J. Price, Ilya Mandel   +2 more
doaj   +1 more source

Delayed X-Ray Brightening Accompanied by Variable Ionized Absorption Following a Tidal Disruption Event

The Astrophysical Journal
Supermassive black holes can experience super-Eddington peak mass fallback rates following the tidal disruption of a star. The theoretical expectation is that part of the infalling material is expelled by means of an accretion disk wind, whose ...
T. Wevers, M. Guolo, D. R. Pasham, E. R. Coughlin, F. Tombesi, Y. Yao, S. Gezari   +6 more
doaj   +1 more source