Results 41 to 50 of about 425,495 (159)
Non-thermal emission from stellar bow shocks
, 2018 Since the detection of non-thermal radio emission from the bow shock of the massive runaway star BD +43$^{\circ}$3654 simple models have predicted high-energy emission, at X and gamma-rays, from these Galactic sources.
del Valle, Maria Victoria, Pohl, Martin
core +1 more source
A Leptonic Interpretation of the Ultra-high-energy Gamma-Ray Emission from V4641 Sgr
The Astrophysical JournalRecently, the microquasar V4641 Sgr and its surrounding have been detected at TeV–PeV gamma-ray band. Interestingly, the spectrum follows a power-law function continuing up to 0.8 PeV as reported by LHAASO, and the morphology of the emission appears to ...
Su-Yu Wan, Jie-shuang Wang, Ruo-Yu Liu
doaj +1 more source
The Astrophysical Journal Letters, 2023 Long-term observations of synchrotron emission from supernovae (SNe), covering more than a year after the explosion, provide a unique opportunity to study the poorly understood evolution of massive stars in the final millennium of their lives via changes
Keiichi Maeda +6 more
doaj +1 more source
A Generic Model for a Persistent Radio Source around Fast Radio Bursts
The Astrophysical JournalThe repeated fast radio bursts FRB 121102A and FRB 190520B have been reported, along with a spatially coincident, compact, persistent radio emission. In this paper, we present a parameterized one-zone model, with the basic scenario that a relativistic ...
Yushan Chen, Hao Tong
doaj +1 more source
Entropy, 2016 Numerical and analytical investigation of the effects of thermal radiation and viscous heating on a convective flow of a non-Newtonian, incompressible fluid in an axisymmetric stretching sheet with constant temperature wall is performed.
Mohammad Yaghoub Abdollahzadeh Jamalabadi +6 more
doaj +1 more source
The Astrophysical Journal, 2022 SN 2018ivc is an unusual Type II supernova (SN II). It is a variant of SNe IIL, which might represent a transitional case between SNe IIP with a massive H-rich envelope and SNe IIb with only a small amount of the H-rich envelope.
Keiichi Maeda +17 more
doaj +1 more source
Anisotropic Diffusion of e± in Pulsar Halos over Multiple Coherence of Magnetic Fields
The Astrophysical JournalThe slow particle diffusion in pulsar halos, inferred from TeV gamma-ray surface brightness profiles (SBPs), is attributed to cross-field diffusion under the anisotropic diffusion model.
Kai Yan, Sha Wu, Ruo-Yu Liu
doaj +1 more source
Nonthermal Emissions from a Head–Tail Radio Galaxy in 3D Magnetohydrodynamic Simulations
The Astrophysical Journal, 2023 We present magnetohydrodynamic simulations of a jet–wind interaction in a galaxy cluster and the radio to gamma-ray and neutrino emissions from this “head–tail galaxy.” Our simulation follows the evolution of cosmic-ray (CR) particle spectra with energy ...
Takumi Ohmura +4 more
doaj +1 more source
Discovery of hard X-ray features around hotspots of Cygnus A
, 2004 We present results of analysis of a Chandra observation of Cygnus A in which the X-ray hotspots at the ends of the jets are mapped in detail. A hardness map reveals previously unknown structure in the form of outer and inner hard arcs around the hotspots,
L. Stawarz +4 more
core +1 more source
The Astrophysical JournalWe conducted a comprehensive temporal and spectral study of the FSRQ PKS 0805-07 by using broadband observations from the Fermi-LAT and Swift-XRT/UVOT instruments over the period of MJD 54684-60264.
Sikandar Akbar +3 more
doaj +1 more source