Results 131 to 140 of about 247,197 (369)

Photospheric Emission of Gamma-Ray Bursts [PDF]

open access: yes, 2017
We review the physics of GRB production by relativistic jets that start highly opaque near the central source and then expand to transparency. We discuss dissipative and radiative processes in the jet and how radiative transfer shapes the observed ...
A. Beloborodov, P. Mészáros
semanticscholar   +1 more source

Multiscale Profiling of Nanoscale Metal‐Organic Framework Biocompatibility and Immune Interactions

open access: yesAdvanced Healthcare Materials, EarlyView.
A multi‐scale, hierarchical ‘Safety‐by‐Design’ pipeline combining machine learning, ex vivo human blood assays, and in vivo models enables the systematic immunotoxicity and biocompatibility profiling of nanoscale metal‐organic frameworks, accelerating their safe clinical translation. Abstract The clinical translation of metal‐organic frameworks (MOFs) –
Yunhui Zhuang   +12 more
wiley   +1 more source

AN UPPER BOUND ON NEUTRON STAR MASSES FROM MODELS OF SHORT GAMMA-RAY BURSTS [PDF]

open access: yes, 2015
The discovery of two neutron stars with gravitational masses ≈ 2 M ⊙ ?> has placed a strong lower limit on the maximum mass of nonrotating neutron stars, and with it a strong constraint on the properties of cold matter beyond nuclear density.
S. Lawrence   +3 more
semanticscholar   +1 more source

SEARCH FOR PROMPT NEUTRINO EMISSION FROM GAMMA-RAY BURSTS WITH ICECUBE [PDF]

open access: yesAstrophysical Journal, 2014
We present constraints derived from a search of four years of IceCube data for a prompt neutrino flux from gamma-ray bursts (GRBs). A single low-significance neutrino, compatible with the atmospheric neutrino background, was found in coincidence with one
I. C. M. Aartsen   +301 more
semanticscholar   +1 more source

Visible Light Induced DLP‐Printed Oxygen‐Releasing TPMS Scaffolds Mitigate Early Hypoxia in Bone Defects

open access: yesAdvanced Healthcare Materials, EarlyView.
Visible light‐induced digital light processing 3D printed Primitive‐triply periodic minimal surface hydrogels embed CaO2–Si core–shell nanoparticles to deliver short‐term oxygen during the avascular window. The scaffolds maintain cytocompatibility, elevate osteopontin in vitro, and enhance calvarial defect repair in vivo without toxicity.
Anastasia B. Timoshenko   +11 more
wiley   +1 more source

Significant Cocoon Emission and Photosphere Duration Stretching in GRB 211211A: A Burst from a Neutron Star−Black Hole Merger

open access: yesThe Astrophysical Journal
The radiation mechanism (thermal photosphere or magnetic synchrotron) and the progenitor of gamma-ray bursts (GRBs) are under hot debate. Recently discovered, the prompt long-duration (∼10 s, normally from the collapse of massive stars) property of GRB ...
Yan-Zhi Meng   +2 more
doaj   +1 more source

The nature of “dark” gamma-ray bursts [PDF]

open access: yesAstronomy & Astrophysics, 2010
9 pages, 6 figs, A&A (accepted)
J. Greiner   +16 more
openaire   +7 more sources

Growth Hormone‐Loaded 3D Printed Silk Fibroin‐Cellulose Dressings for Ischemic Wounds

open access: yesAdvanced Healthcare Materials, EarlyView.
3D‐printed wound dressings combining carboxymethyl cellulose, silk fibroin, and growth hormone accelerate healing in diabetic ulcers. These bioactive, customizable dressings enhance angiogenesis, cellular proliferation, and immune modulation. Proteomic analysis reveals activation of regenerative pathways and reduced fibrosis, highlighting their ...
Maria Pita‐Vilar   +7 more
wiley   +1 more source

Spectral and Jet Properties of the Quasi-thermal-dominated GRB 210121A, GRB 210610B, and GRB 221022B

open access: yesThe Astrophysical Journal
Some quasi-thermal (QT)-dominated gamma-ray bursts (GRBs) could be well described by a multicolor blackbody (mBB) function or a combined model of a BB plus a nonthermal (NT) component.
Xin-Ying Song, Ling-Jun Wang, Shu Zhang
doaj   +1 more source

Neutrino and cosmic-ray emission from multiple internal shocks in gamma-ray bursts [PDF]

open access: yesNature Communications, 2014
Gamma-ray bursts (GRBs) are short-lived, luminous explosions at cosmological distances, thought to originate from relativistic jets launched at the deaths of massive stars.
M. Bustamante   +3 more
semanticscholar   +1 more source

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