Results 31 to 40 of about 6,356 (253)

Effects of dead time losses on terrestrial gamma ray flash measurements with the Burst and Transient Source Experiment [PDF]

Journal of Geophysical Research: Space Physics, 2010
Measurements from the Burst and Transient Source Experiment (BATSE) instrument on the Compton Gamma Ray Observatory (CGRO) are the only ones where characteristics of single terrestrial gamma ray flashes (TGFs) have been obtained thus far. However, it has been reported that the measurements suffer from significant dead time losses which complicates the ...
Gjesteland, Thomas, Østgaard, Nikolai, Connell, P. H., Stadsnes, J., Fishman, G. J.   +4 more
openaire   +3 more sources

The Complete Catalog of Gamma-Ray Transients Observed by GRBAlpha and VZLUSAT-2 CubeSat Missions

The Astrophysical Journal Supplement Series
We present the largest sample of gamma-ray transients observed by any CubeSat mission so far. Observations were acquired by a 1U CubeSat GRBAlpha, the smallest astrophysical space observatory, and a 3U CubeSat VZLUSAT-2.
Marianna Dafčíková, Jakub Řípa, András Pál, Norbert Werner, Michaela Ďuríšková, Yasushi Fukazawa, Martin Kolář, László Mészáros, Filip Münz, Masanori Ohno, Lea Szakszonová, Hiromitsu Takahashi, Masato Yokota, Jean-Paul Breuer, Hsiang-Kuang Chang, Balázs Csák, Vladimír Dániel, Juraj Dudáš, Marcel Frajt, Gábor Galgóczi, Peter Hanák, Filip Hroch, Chin-Ping Hu, Jan Hudec, Nikola Husáriková, Yuto Ichinohe, Jakub Kapuš, Miroslav Kasal, Martin Koleda, Róbert László, Chih-Hsun Lin, Tsung-Che Liu, Tsunefumi Mizuno, Kazuhiro Nakazawa, Hirokazu Odaka, Michal Pazderka, Aleš Povalač, Maksim Rezenov, Martin Sabol, Kaustubha Sen, Miroslav Šmelko, Petr Svoboda, Martin Topinka, Che-Chih Tsao, Tomáš Urbanec, Ivo Veřtát, Tomáš Vítek, Chih-En Wu   +47 more
doaj   +1 more source

Impact of Hydrogen Incorporation on Electronic and Magnetic Structure of X2CrNi18‐9 Stainless Steel

Advanced Engineering Materials, EarlyView.
Hydrogen uptake in austenitic stainless steel alters both its electronic and magnetic structure. Seebeck measurements reveal hydrogen‐induced shifts in the electronic density of states, while neutron scattering uncovers nanoscale inhomogeneities that grow upon hydrogen incorporation, with the most pronounced effect observed in the PBF as‐built state ...
Torben Tappe, Louis Becker, Gaurav Kanu, Thomas F. Headen, Dirk Honecker, Gabi Schierning, Santiago Benito, Sebastian Weber, Klara Lünser, Sabrina Disch   +9 more
wiley   +1 more source

GRB 211024B: An Ultra-long GRB Powered by Magnetar

The Astrophysical Journal
Ultra-long gamma-ray bursts are characterized by exceptionally long-duration central engine activities, with characteristic timescales exceeding 1000 s. We present ground-based optical afterglow observations of the ultra-long gamma-ray burst GRB 211024B,
Shao-Yu Fu, Dong Xu, Wei-Hua Lei, Antonio de Ugarte Postigo, Daniele B. Malesani, David Alexander Kann, Páll Jakobsson, Johan P. U. Fynbo, Elisabetta Maiorano, Andrea Rossi, Diego Paris, Xing Liu, Shuai-Qing Jiang, Tian-Hua Lu, Jie An, Zi-Pei Zhu, Xing Gao, Jian-Yan Wei   +17 more
doaj   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

Advanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang, Chao Hsuan (Joseph) Sung, Haitao Yu, Ezra Sarmiento, Katarina Kotanchek, Ryan Christopher Lee, Michelle Chan, David Kisailus   +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

Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport

Advanced Functional Materials, EarlyView.
Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar, María del Carmen Giménez‐López   +1 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

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

AGILE Observations of Variable and transient $\gamma$-ray sources in the Galactic plane, Catalog improvements [PDF]

Proceedings of 25th Texas Symposium on Relativistic Astrophysics — PoS(Texas 2010), 2011
AGILE has provided continuous monitoring of the Galactic plane in γ-rays in more than three years of operation [1]. Thanks to its sensitivity at energies near 100 MeV, AGILE has observed variability and transient behavior in a number of sources. Simultaneous hard X-ray coverage, rapid alerts to the astronomical community, and multiwavelength campaigns ...
openaire   +2 more sources