Results 61 to 70 of about 29,884 (299)

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

The Nature of Optical Afterglows without Gamma-Ray Bursts: Identification of AT2023lcr and Multiwavelength Modeling

The Astrophysical Journal
In the past few years, the improved sensitivity and cadence of wide-field optical surveys have enabled the discovery of several afterglows without associated detected gamma-ray bursts (GRBs).
Maggie L. Li, Anna Y. Q. Ho, Geoffrey Ryan, Daniel A. Perley, Gavin P. Lamb, Nayana A.J., Igor Andreoni, G. C. Anupama, Eric C. Bellm, Edo Berger, Joshua S. Bloom, Eric Burns, Ilaria Caiazzo, Poonam Chandra, Michael W. Coughlin, Kareem El-Badry, Matthew J. Graham, Mansi Kasliwal, Garrett K. Keating, S. R. Kulkarni, Harsh Kumar, Frank J. Masci, Richard A. Perley, Josiah Purdum, Ramprasad Rao, Antonio C. Rodriguez, Ben Rusholme, Nikhil Sarin, Jesper Sollerman, Gokul P. Srinivasaragavan, Vishwajeet Swain, Zachary Vanderbosch   +31 more
doaj   +1 more source

ASCA Observations of Transient X-Ray Sources in Quiescence [PDF]

Publications of the Astronomical Society of Japan, 1998
Soft X-ray transients are most probably low-mass binary systems containing either a neutron star (NS-LMXB) or a black hole (BH-LMXB). We have systematically investigated thirteen soft X-ray transients (four NS-LMXBs and nine BH-LMXBs) in the quiescent state using the available ASCA data.
Kazumi Asai, Tadayasu Dotani, Reiun Hoshi, Yasuo Tanaka, Craig R. Robinson, Kentaro Terada   +5 more
openaire   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Ultraluminous x-ray sources in external galaxies [PDF]

, 2001
We investigate models for the class of ultraluminous nonnuclear X-ray sources (i.e., ultraluminous compact X-ray sources [ULXs]) seen in a number of galaxies and probably associated with star-forming regions. Models in which the X-ray emission is assumed
Ward, M.J., Fabbiano, G., Elvis, M., King, A.R., Davies, M.B.   +4 more
core   +3 more sources

The Landscape of Collapsar Outflows: Structure, Signatures, and Origins of Einstein Probe Relativistic Supernova Transients

The Astrophysical Journal Letters
The Einstein Probe is revolutionizing time-domain astrophysics through the discovery of new classes of X-ray transients associated with broad-line Type Ic supernovae.
Ore Gottlieb
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

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

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
Serrat, Carles, Zalden, Peter, Ardana-Lamas, Fernando, Markus Scholz, Matias Bargheer, Frederico Lima, Jakub Szlachetko, Paltanin, Ettore, Rossi, Giorgio, Brioschi, Marta, Svetina, Cristian, Urs Staub, 1Siti Heder, Feurer, Thomas, Milne, Christopher, Mano R. D. Veeraraj, Riccardo Cucini, Beye, Martin, Danny Fainozzi, Dhanalakshmi-Veeraraj, Mano R, Joan Vila-Comamala, Carles Serrat, Filippo Bencivenga, Carrara, Pietro, Gawelda, Wojciech M, Bañares, Luis, Anders Madsen, Giorgio Rossi, Nelson, Keith A, Mamyrbayev, Talgat, Peter Zalden, Szlachetko, Jakub, Gessini, Alessandro, Ettore Paltanin, Marta Brioschi, Martin Beye, Bencivenga, Filippo, Huang, Xinchao, Thomas Feuer, Vila-Comamala, Joan, Mykola Biednov, Cucini, Riccardo, Claudio Masciovecchio, Chergui, Majed, Xu, Han, Nupur N. Khatu, Riccardo Mincigrucci, Wojciech M. Gawelda, David, Christian, Bargheer, Matias, Han Xu, Cristian Svetina, Heder, Siti, Knoll Martin, Eugenio Ferrari, Benedikt R ̈osner, Christian David, Khatu, Nupur N, Robin Y. Engel, Cannizzo, Andrea, Bonetti, Stefano, Luis Ba ̃nares, 4 Stefano Bonetti, Engel, Robin Y, Nadia Berndt, Talgat Mamyrbayev, Renato Torre, Christopher Milne, Torre, Renato, Alexei A. Maznev, Andrea Cannizzo, Paul Frankenberger, Staub, Urs, Keith A. Nelson, Alessandro Gessini, Scholz, Markus, Biednov, Mykola, Berndt, Nadia, Madsen, Anders, Fernando Ardana-Lamas, Xinchao Huang, Maznev, Alexei A, Frankenberger, Paul, Knoll, Martin, Lima, Frederico, Mincigrucci, Riccardo, Engel, Robin Y., Ferrari, Eugenio, Masciovecchio, Claudio, Fainozzi, Danny, Pietro Carrara, Majed Chergui   +91 more
core   +3 more sources

Hubble Constant Measurement from Quasiperiodic Eruptions as Electromagnetic Counterparts to Extreme Mass Ratio Inspirals

The Astrophysical Journal
Gravitational waves (GWs) accompanied by electromagnetic counterparts, known as bright sirens, provide a novel methodology to measure the Hubble constant ( H _0 ).
Yejing Zhan, Di Wang, Shuang-Xi Yi, Fa-Yin Wang   +3 more
doaj   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source