Results 61 to 70 of about 6,416,221 (303)

On the origin of the dark gamma-ray bursts [PDF]

, 2005
The origin of dark bursts—i.e. that have no observed afterglows in X-ray, optical/NIR and radio ranges—is unclear yet. Different possibilities—instrumental biases, very high redshifts, extinction in the host galaxies—are discussed and shown to be ...
Ryde, Felix, Bagoly, Zsolt, Ryde, F, Borgonovo, Luis,, Mészáros, A., Horváth, I., Bagoly, Z., Klose, S., Borgonovo, L, Balázs, L. G., Balázs, L G, Ryde, Felix,, Horváth, I, Mészáros, A, Larsson, Stefan,, Larsson, S., Bagoly, Z, Klose, S, Larsson, S, Mészáros, Attila, Borgonovo, L., Ryde, F., Horváth, István   +22 more
core   +1 more source

Simultaneous Multiwavelength Observations of the Repeating Fast Radio Burst FRB 20190520B with Swift and FAST

The Astrophysical Journal
Among several dozen known repeating fast radio bursts, those precisely localized offer the best opportunities to explore their multiwavelength counterparts, which are key to uncovering their origins.
Zhen Yan, Wenfei Yu, Kim L. Page, Jie Lin, Di Li, Chenhui Niu, Casey Law, Bing Zhang, Shami Chatterjee, Xian Zhang, Reshma Anna-Thomas   +10 more
doaj   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Gamma-ray bursts during neutron star formation. Gamma-ray bursts and transient X-ray sources [PDF]

, 1973
Discussions are presented of the associations between cosmic gamma ray bursts and transient X-ray sources, and the release of gravitational binding energy during the formation of neutron stars.
Cohen, J. M., Desai, U. D., Holt, S. S.
core  

XMM-Newton detection of type I X-ray bursts in M 31 [PDF]

, 2005
We searched for X-ray bursts in XMM-Newton archival data of X-ray sources in M ...
Pietsch, W., W. Pietsch, F. Haberl, Haberl, F.   +3 more
core   +1 more source

A New X-Ray and Radio Burst Activity from the Magnetar SGR 1935+2154

The Astrophysical Journal Supplement Series
SGR 1935+2154 has emerged as the most active magnetar in recent years, exhibiting X-ray burst activity nearly annually and emitting a fast radio burst (FRB 200428 (FRB1)) in its 2020 April activity, for the first time from a Milky Way source, accompanied
Noor S. Rehan, Alaa I. Ibrahim
doaj   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

The Redshift Distribution of Einstein Probe Transients Supports Their Relation to Gamma-Ray Bursts

The Astrophysical Journal Letters
The launch of the Einstein Probe unleashed a new era of high-energy transient discovery in the largely unexplored soft X-ray band. The Einstein Probe has detected a significant number of fast X-ray transients that display no gamma-ray emission ...
Brendan O’Connor, Paz Beniamini, Eleonora Troja, Malte Busmann, Simone Dichiara, Ramandeep Gill, Jonathan Granot, Michael J. Moss, Xander J. Hall, Antonella Palmese, Niccolò Passaleva, Yu-Han Yang   +11 more
doaj   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source

Neutron Stars and Thermonuclear X-ray Bursts [PDF]

, 2007
This viewgraph presentation describes neutron stars and thermonuclear x ray bursts. The contents include: 1) Neutron Stars: why do we care?; 2) Thermonuclear Bursts: why do we care?; 3) Neutron Stars: Mass, Radius and Spin: a.
Bhattacharyya, Supid, Bhattacharyya, Sudip   +1 more
core