Results 11 to 20 of about 70,469 (251)

Ultrafast strong-field dissociation of vinyl bromide: An attosecond transient absorption spectroscopy and non-adiabatic molecular dynamics study

Structural Dynamics, 2021
Attosecond extreme ultraviolet (XUV) and soft x-ray sources provide powerful new tools for studying ultrafast molecular dynamics with atomic, state, and charge specificity.
Florian Rott, Maurizio Reduzzi, Thomas Schnappinger, Yuki Kobayashi, Kristina F. Chang, Henry Timmers, Daniel M. Neumark, Regina de Vivie-Riedle, Stephen R. Leone   +8 more
doaj   +1 more source

Ultraviolet and X-ray Light-Curves of Novae Observed by the Neil Gehrels Swift Observatory

Universe, 2022
With rapid response capabilities, and a daily planning of its observing schedule, the Neil Gehrels Swift Observatory is ideal for monitoring transient and variable sources.
Kim L. Page, N. Paul M. Kuin, Julian P. Osborne   +2 more
doaj   +1 more source

A Plasma Instability Theory of Gamma-Ray Burst Emission [PDF]

, 1999
A new theory for gamma-ray burst radiation is presented. In this theory, magnetic fields and relativistic electrons are created through plasma processes arising as a relativistic shell passes through the interstellar medium.
J. J. Brainerd, Rees M. J.
core   +3 more sources

X-Ray, Near-ultraviolet, and Optical Flares Produced by Colliding Magnetospheres in the Young High-eccentricity Binary DQ Tau

The Astrophysical Journal, 2023
DQ Tau is a unique young high-eccentricity binary system that exhibits regular magnetic reconnection flares and pulsed accretion near periastron. We conducted NuSTAR, Swift, and Chandra observations during the 2022 July 30 periastron to characterize X ...
Konstantin V. Getman, Ágnes Kóspál, Nicole Arulanantham, Dmitry A. Semenov, Grigorii V. Smirnov-Pinchukov, Sierk E. van Terwisga   +5 more
doaj   +1 more source

Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis [PDF]

, 2017
On 2017 August 17, gravitational waves were detected from a binary neutron star merger, GW170817, along with a coincident short gamma-ray burst, GRB170817A.
Adams, C., Alatalo, K., Baughman, J., Bañados, E., Beers, T. C., Bernstein, R. A., Bidin, C. Moni, Bitsakis, T., Boutsia, K., Campillay, A., Contreras, C., Coulter, D. A., Di Mille, F., Drout, M. R., Foley, R. J., Hansen, T. T., Higgs, C. R., Holoien, T. W. -S., Ji, A. P., Kasen, D., Kilpatrick, C. D., Kollmeier, J. A., Madore, B. F., Maravelias, G., Marshall, J. L., Monson, A. J., Morrell, N., Murguia-Berthier, A., Pan, Y. -C., Piro, A. L., Prieto, J. L., Prochaska, J. X., Ramirez-Ruiz, E., Rasmussen, K. C., Rest, A., Rojas-Bravo, C., Shappee, B. J., Siebert, M. R., Simon, J. D., Strom, A. L., Ulloa, N., Vargas-González, J., Wan, Z., Whitten, D. D.   +43 more
core   +2 more sources

Statistical Study of Ejections in Coronal Hole Regions As Possible Sources of Solar Wind Switchbacks and Small-scale Magnetic Flux Ropes

The Astrophysical Journal Letters, 2023
The omnipresence of transient fluctuations in the solar wind, such as switchbacks (SBs) and small-scale magnetic flux ropes (SMFRs), have been well observed by the in situ observation of Parker Solar Probe (PSP), yet their sources are not clear. Possible
Nengyi Huang, Sophia D’Anna, Haimin Wang   +2 more
doaj   +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

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

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