Results 21 to 30 of about 428,338 (258)
Coherent Inverse Compton Scattering in Fast Radio Bursts Revisited
The Astrophysical JournalGrowing observations of temporal, spectral, and polarization properties of fast radio bursts (FRBs) indicate that the radio emission of the majority of bursts is likely produced inside the magnetosphere of its central engine, likely a magnetar.
Yuanhong Qu, Bing Zhang
doaj +1 more source
Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays [PDF]
, 2016 The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation - apart from controlling astrophysical uncertainties.
Boncioli, Denise +2 more
core +1 more source
E2A selectively regulates TGF‐β–induced apoptosis in KRAS‐mutant non‐small cell lung cancer
Molecular Oncology, EarlyView.Ability to induce apoptosis by TGF‐β is frequently lost in advanced lung adenocarcinoma despite intact TGF‐β signaling. We identify E2A as a mutant KRAS–dependent mediator of resistance to TGF‐β–induced apoptosis. TGF‐β induces E2A via SMAD3 in mutant KRAS cells, and E2A silencing restores apoptosis and enhances radiation response in cell lines ...
Sergei Chuikov +3 more
wiley +1 more source
The Origins of Narrow Spectra of Fast Radio Bursts
The Astrophysical JournalObservations find that some fast radio bursts (FRBs) have extremely narrowband spectra, i.e., Δ ν / ν _0 ≪ 1. We show that, when the angular size of the emission region is larger than the Doppler beaming angle, the observed spectral width (Δ ν / ν _0 ...
Pawan Kumar, Yuanhong Qu, Bing Zhang
doaj +1 more source
X-ray study of bow shocks in runaway stars [PDF]
, 2017 Massive runaway stars produce bow shocks through the interaction of their winds with the interstellar medium, with the prospect for particle acceleration by the shocks. These objects are consequently candidates for non-thermal emission.
Benaglia, Paula +4 more
core +4 more sources
Molecular Oncology, EarlyView.Intratumour heterogeneity complicates precision management of advanced endometrial cancer. Circulating tumor DNA (ctDNA) offers a minimally invasive strategy to capture tumor evolution and therapeutic resistance. Here, we compare tumor‐agnostic NGS with tumor‐informed ddPCR, outlining their relative sensitivity, concordance, and clinical implications ...
Carlos Casas‐Arozamena +15 more
wiley +1 more source
Multiwavelength Variability and Jet Properties of Low-synchrotron-peaked BL Lacertae Objects
The Astrophysical JournalLow-synchrotron-peaked BL Lac objects (LBLs) are promising candidates for masquerading BL Lacs, and the mechanism responsible for their high-energy γ -ray emission still requires further investigation.
R. X. Zhou +4 more
doaj +1 more source
Multiwavelength observations of clusters of galaxies and the role of cluster mergers [PDF]
, 2000 Some clusters of galaxies have been identified as powerful sources of non-thermal radiation, from the radio to X-ray wavelengths. The classical models proposed for the explanation of this radiation usually require large energy densities in cosmic rays in
Blasi, Pasquale
core +3 more sources
New results from H.E.S.S. observations of galaxy clusters
, 2009 Clusters of galaxies are believed to contain a significant population of cosmic rays. From the radio and probably hard X-ray bands it is known that clusters are the spatially most extended emitters of non-thermal radiation in the Universe.
DALIBOR NEDBAL +4 more
core +3 more sources
Neutrinos from active galactic nuclei as a diagnostic tool [PDF]
, 2001 Active galactic nuclei (AGN) are known as sources of high energy gamma-rays. The emission probably results from non-thermal radiation of relativistic jets belonging to the AGN.
Bahcall +38 more
core +2 more sources