Results 91 to 100 of about 2,093,256 (347)

Comprehensive X-Ray Observations of the Exceptional Ultralong X-Ray and Gamma-Ray Transient GRB 250702B with Swift, NuSTAR, and Chandra: Insights from the X-Ray Afterglow Properties

The Astrophysical Journal Letters
GRB 250702B is an exceptional transient that produced multiple episodes of luminous gamma-ray radiation lasting for >25 ks, placing it among the class of ultralong gamma-ray bursts (GRBs). However, unlike any known GRB, the Einstein Probe detected soft-X-
Brendan O’Connor, Ramandeep Gill, James DeLaunay, Jeremy Hare, Dheeraj Pasham, Eric R. Coughlin, Ananya Bandopadhyay, Akash Anumarlapudi, Paz Beniamini, Jonathan Granot, Igor Andreoni, Jonathan Carney, Michael J. Moss, Ersin Göğüş, Jamie A. Kennea, Malte Busmann, Simone Dichiara, James Freeburn, Daniel Gruen, Xander J. Hall, Antonella Palmese, Tyler Parsotan, Samuele Ronchini, Aaron Tohuvavohu, Maia A. Williams   +24 more
doaj   +1 more source

One‐Pot Transition‐Metal‐Free Methods for the Synthesis of All Three Bonds of the Alkyne's Triple Bond

Chemistry – A European Journal, EarlyView.
One‐pot transition‐metal‐free methods for the synthesis of all three bonds of the alkyne's triple bond are reviewed. After analysis of several named reactions and discussion of improvements, recent advances in the synthesis of alkynes are discussed. Each section contains a proposed reaction mechanism and analysis of the strengths and weaknesses of the ...
Eugene Kim, Yu Wu, Judith N. Currano, Jianyou Mao, Patrick J. Walsh   +4 more
wiley   +1 more source

Glancing incidence telescopes for space astronomy [PDF]

Design optimization is reported for glancing telescopes of increased collecting areas. Considered are nested geometries for X-ray and extreme ultraviolet telescopes, each of which generates only one singular principal surface.
Mangus, J. D.
core   +1 more source

GRB 081029: Understanding Multiple Afterglow Components

, 2011
We present an analysis of the unusual optical light curve of the gamma-ray burst GRB~081029, which occurred at a redshift of z = 3.8479$. We combine X-ray and optical observations from the Swift X-Ray Telescope and the Swift UltraViolet/Optical Telescope
Antonelli, A., Chincarini, G., Covino, S., D'Avanzo, P., D'Elia, V., De Pasquale, M., Fiore, F., Holland, S. T., Mao, J., Pandey, S. B., Sakamoto, T., Schady, P.   +11 more
core   +1 more source

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Cadmium Zinc Telluride detectors for a next-generation hard X-ray telescope [PDF]

, 2021
Jason Tang, Fabian Kislat, H. Krawczynski   +2 more
openalex   +1 more source

Hydrothermal Alkali‐Assisted Growth of Highly In‐Plane Crystallized Poly(Heptazine Imide) for Photocatalytic H2O2 Production

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A new re‐crystallization strategy was employed to design a highly crystallized poly(heptazine imide) photocatalyst, achieving strong light absorption capacity, accelerated separation/migration of photocarriers, and enhanced proton extraction capability simultaneously.
Xiaojuan Zhi, Hongguan Li, Yuxin Zhu, Xinglong Li, Jinfu Zhao, Zhongbiao Li, Jian Zeng, Jihoon Choi, Suvankul Nurmanov, Olim Ruzimuradov, Shulan Wang, Li Li   +11 more
wiley   +1 more source

When species are lost but functions persist: a trait‐based perspective on Wadden Sea bird diversity dynamics

Oikos, EarlyView.
Biodiversity faces several global threats and communities are likely to show complex delayed responses. Accurately measuring these lags is critical to properly understand diversity dynamics. Here, we investigated these delays with minimal data availability and found critical mismatches between the temporal dynamics of taxonomic and functional diversity
Lucie Kuczynski, Ana Maria Bastidas‐Urrutia, Jan Bernhard Kalusche, Christian Hof, Gregor Scheiffarth, Alexey Ryabov, Helmut Hillebrand   +6 more
wiley   +1 more source

GRB 241030A: Multicomponent Origin of Early Emission from the Photosphere and Internal and External Shocks

The Astrophysical Journal
We present a detailed analysis of the long-duration GRB 241030A detected by Swift. Thanks to the rapid response of the X-Ray Telescope (XRT) and Ultraviolet/Optical Telescope, the strongest part of the prompt emission of GRB 241030A has been well ...
Qiu-Li Wang, Hao Zhou, Yun Wang, Jia Ren, Samaporn Tinyanont, Dong Xu, Ning-Chen Sun, Johan P. U. Fynbo, Daniele B. Malesani, Jie An, Rungrit Anutarawiramkul, Pathompong Butpa, Shao-Yu Fu, Shuai-Qing Jiang, Xing Liu, Kritsada Palee, Pakawat Prasit, Zi-Pei Zhu, Lu-Yao Jiang, Zhi-Ping Jin, Da-Ming Wei   +20 more
doaj   +1 more source

Long‐Range Time‐Correlated Single‐Photon Counting Lidar 3D‐Reconstruction From a Moving Ground Vehicle

Journal of Field Robotics, EarlyView.
ABSTRACT Time‐correlated single‐photon counting (TCSPC) lidar enables high‐resolution 3D imaging at kilometer range. While previous works have covered long range TCSPC 3D imaging from either stationary or airborne platforms, this is, to the best of our knowledge, the first attempt that use a moving ground vehicle. Fusing measurements taken at different
Hannes Ovrén, Max Holmberg, Markus Henriksson   +2 more
wiley   +1 more source