Results 51 to 60 of about 166,732 (180)

Radio Observations of GRB Host Galaxies

, 2014
We present 5.5 and 9.0 GHz observations of a sample of seventeen GRB host galaxies at 0 ...
Davies, Luke J M, Levan, A J, Stanway, E R   +2 more
core   +1 more source

Eddington Envelopes: The Fate of Stars on Parabolic Orbits Tidally Disrupted by Supermassive Black Holes

The Astrophysical Journal Letters
Stars falling too close to massive black holes in the centers of galaxies can be torn apart by the strong tidal forces. Simulating the subsequent feeding of the black hole with disrupted material has proved challenging because of the range of timescales ...
Daniel J. Price, David Liptai, Ilya Mandel, Joanna Shepherd, Giuseppe Lodato, Yuri Levin   +5 more
doaj   +1 more source

Understanding the Death of Massive Stars Using an Astrophysical Transients Observatory

Frontiers in Astronomy and Space Sciences, 2018
The death of massive stars, manifested as gamma-ray bursts and core-collapse supernovae, critically influence how the universe formed and evolves. Despite their fundamental importance, our understanding of these enigmatic objects is severely limited.
Peter W. A. Roming, Eddie Baron, Amanda J. Bayless, Volker Bromm, Peter J. Brown, Michael W. Davis, Anastasia Fialkov, Brian Fleming, Kevin France, Chris L. Fryer, Thomas K. Greathouse, Jed J. Hancock, D. Andrew Howell, D. Andrew Howell, Andrew J. Levan, Abraham Loeb, Raffaella Margutti, Mark L. McConnell, Paul T. O'Brien, Julian P. Osborne, Daniel A. Perley, Eric M. Schlegel, Rhaana L. C. Starling, Nial R. Tanvir, Mark Tapley, Patrick A. Young, Bing Zhang   +26 more
doaj   +1 more source

Protocols for x-ray transient grating pump/optical probe experiments at x-ray free electron lasers

Journal of Physics B: Atomic, Molecular and Optical Physics
Transient grating spectroscopy is a specialized application of the four-wave-mixing methodology and constitutes a versatile technique for investigating the dynamics of vibrational, magnetic and electronic degrees of freedom of matter in a background-free
D. Fainozzi, R. Cucini, J. Vila-Comamala, F. Lima, F. Ardana-Lamas, Luis Bañares, Matias Bargheer, F. Bencivenga, Nadia Berndt, M. Beye, M. Biednov, S. Bonetti, M. Brioschi, A. Cannizzo, P. Carrara, M. Chergui, Christian David, R. Engel, E. Ferrari, T. Feurer, P. Frankenberger, W. Gawelda, A. Gessini, S. Heder, Xinchao Huang, N. Khatu, Martin Knoll, Anders Madsen, T. Mamyrbayev, C. Masciovecchio, A. Maznev, Christopher Milne, R. Mincigrucci, K. Nelson, Ettore Paltanin, G. Rossi, M. Scholz, Carles Serrat, U. Staub, Jakub Szlachetko, Renato Torre, Mano R Dhanalakshmi-Veeraraj, Han Xu, P. Zalden, C. Svetina   +44 more
semanticscholar   +1 more source

Physics of laser-driven tin plasma sources of EUV radiation for nanolithography

Plasma Sources Science & Technology, 2019
Laser-produced transient tin plasmas are the sources of extreme ultraviolet (EUV) light at 13.5 nm wavelength for next-generation nanolithography, enabling the continued miniaturization of the features on chips.
O. Versolato
semanticscholar   +1 more source

Formation Rate of Quasiperiodic Eruptions in Galactic Nuclei Containing Single and Dual Supermassive Black Holes

The Astrophysical Journal Letters
Quasiperiodic eruptions (QPEs) are a novel class of transients recently discovered in a few extragalactic nuclei. It has been suggested that a QPE can be produced by a main-sequence star undergoing repeated partial disruptions by the tidal field of a ...
Chunyang Cao, F. K. Liu, Xian Chen, Shuo Li   +3 more
doaj   +1 more source

Exploring the multiparameter nature of EUV-visible wave mixing at the FERMI FEL

Structural Dynamics, 2019
The rapid development of extreme ultraviolet (EUV) and x-ray ultrafast coherent light sources such as free electron lasers (FELs) has triggered the extension of wave-mixing techniques to short wavelengths.
L. Foglia, F. Capotondi, H. Höppner, A. Gessini, L. Giannessi, G. Kurdi, I. Lopez Quintas, C. Masciovecchio, M. Kiskinova, R. Mincigrucci, D. Naumenko, I. P. Nikolov, E. Pedersoli, G. M. Rossi, A. Simoncig, F. Bencivenga   +15 more
doaj   +1 more source

Probing the Subparsec Dust of a Supermassive Black Hole with the Tidal Disruption Event AT 2020mot

The Astrophysical Journal
AT 2020mot is a typical UV/optical tidal disruption event (TDE) with no radio or X-ray signatures in a quiescent host. We find an i -band excess and rebrightening along the decline of the light curve which could be due to two consecutive dust echoes from
Megan Newsome, Iair Arcavi, D. Andrew Howell, Jamison Burke, Kishalay De, Yael Dgany, Sara Faris, Joseph Farah, Daichi Hiramatsu, Curtis McCully, Estefania Padilla-Gonzalez, Craig Pellegrino, Giacomo Terreran   +12 more
doaj   +1 more source

Novel laser gain and time-resolved FTIR studies of photochemistry [PDF]

, 1990
Several techniques are discussed which can be used to explore laboratory photochemical processes and kinetics relevant to planetary atmospheres; these include time-resolved laser gain-versus-absorption spectroscopy and time-resolved Fourier transform ...
Leone, Stephen R.
core   +1 more source

UV Radiative Feedback on High-Redshift Proto-Galaxies

, 2006
We use three-dimensional hydrodynamic simulations to investigate the effects of a transient photoionizing ultraviolet (UV) flux on the collapse and cooling of pregalactic clouds.
Bryan, Greg, Haiman, Zoltan, Mesinger, Andrei   +2 more
core   +1 more source