Results 51 to 60 of about 70,039 (295)

Very high energy gamma-ray emission from X-ray transients during major outbursts [PDF]

, 2007
Context: Some high mass X-ray binaries (HMXB) have been recently confirmed as gamma-ray sources by ground based Cherenkov telescopes. In this work, we discuss the gamma-ray emission from X-ray transient sources formed by a Be star and a highly magnetized
Aharonian, Aharonian, Albert, Anchordoqui, Bednarek, Bednarek, Bednarek, Begelman, Björnsson, Bosch-Ramon, Bosch-Ramon, Cheng, Cheng, Cheng, Cheng, Coe, Dubus, Finger, G. E. Romero, Giovannelli, Gosh, Haigh, Jones, Kniffen, L. J. Pellizza, Liu, M. Orellana, Merloni, Mori, Orellana, Paredes, Protheroe, Protheroe, Romero, Romero, Romero, Rossi, Rudak, S. Vidrih, Shakura, Sierpowska, Stella, Teresi, Wang   +43 more
core   +3 more sources

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling, Haoran Wang, Pan Yang, Rishav Agrawal, Alex R. Neale, Laurence J. Hardwick, Tom Hasell, Esther García‐Tuñón   +7 more
wiley   +1 more source

Gamma-Ray Bursts Observed by the Transiting Exoplanet Survey Satellite: Prompt Optical Counterparts and Afterglows of Swift-XRT-localized Gamma-Ray Bursts

The Astrophysical Journal
Very few detections have been made of optical flashes contemporaneous with prompt high-energy emission from a gamma-ray burst (GRB). In this work, we present and analyze light curves of GRB-associated optical flashes and afterglows from the Transiting ...
Rahul Jayaraman, Michael Fausnaugh, George R. Ricker, Roland Vanderspek, Geoffrey Mo   +4 more
doaj   +1 more source

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source

Fast X-Ray Transients in NuSTAR Data

The Astrophysical Journal
Fast X-ray transients (FXTs) are flashes of X-rays that last for a few hundreds of seconds to a few hours. An enigmatic population of these transients that did not have a clear origin has been known for several decades, mostly found serendipitously in ...
Murray Brightman, Joahan Castañeda Jaimes, Daniel Stern, Brian Grefenstette   +3 more
doaj   +1 more source

Absorption of Gamma-Ray Burst X-Ray Afterglows by the Missing Baryons: Confronting Observations with Cosmological Simulations

The Astrophysical Journal, 2023
A large fraction of the baryons at low redshift are undetected and likely reside in the tenuous, hot intergalactic medium (IGM). One way to probe the missing baryons is through their absorption of bright sources.
Matan Grauer, Ehud Behar
doaj   +1 more source

High-Energy Emission Induced by Ultra-High-Energy Photons as a Probe of Ultra-High-Energy Cosmic-Ray Accelerators Embedded in the Cosmic Web

, 2011
The photomeson production in ultra-high-energy cosmic-ray (UHECR) accelerators such as gamma-ray bursts and active galaxies may lead to ultra-high-energy (UHE) gamma-ray emission.
Murase, Kohta
core   +1 more source

An optimal method for scheduling observations of large sky error regions for finding optical counterparts to transients [PDF]

, 2016
The discovery and subsequent study of optical counterparts to transient sources is crucial for their complete astrophysical understanding. Various gamma ray burst (GRB) detectors, and more notably the ground--based gravitational wave detectors, typically
Bhalerao, Varun, Bose, Sukanta, Gadre, Bhooshan, Rana, Javed, Singhal, Akshat   +4 more
core   +2 more sources

ON THE THEORY OF GAMMA RAY BURSTS AND HYPERNOVAE: THE BLACK HOLE SOFT X-RAY TRANSIENT SOURCES

International Journal of Modern Physics A, 2003
We show that a common evolutionary history can produce the black hole binaries in the Galaxy in which the black holes have masses of ~ 5 - 10M⊙. In the black hole binaries with low-mass, ≲ 2.5M⊙ ZAMS (zero age main sequence) companions, the latter remain in main sequence during the active stage of soft X-ray transients (SXT's), most of them being of K
Lee, Chang-Hwan, Brown, Gerald E.
openaire   +2 more sources

Fermi-LAT Detection of a Transient γ-Ray Source in the Direction of a Distant Blazar B3 1428+422 at z = 4.72 [PDF]

The Astrophysical Journal Letters, 2018
Abstract We report the detection of a transient γ-ray source in the direction of B3 1428+422 (z = 4.72) by analyzing the 110-month Fermi-LAT Pass 8 data. The new transient γ-ray source is far away from the Galactic plane and has a rather soft spectrum, in agreement with being a high redshift blazar.
Neng-Hui Liao, Shang Li, Yi-Zhong Fan
openaire   +2 more sources