Could the TeV emission of starburst galaxies originate from pulsar wind nebulae? [PDF]
, 2023 While the GeV $\gamma$-ray emission of starburst galaxies (SBG) is commonly thought to arise from hadronic interactions between accelerated cosmic rays and interstellar gas, the origin of the TeV $\gamma$-ray emission is more uncertain.
Xiao-Bin Chen +3 more
semanticscholar +1 more source
Testing a stochastic acceleration model of pulsar wind nebulae: Early evolution of a wind nebula associated with SN 1986J [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Over three thousand pulsars have been discovered, but none have been confirmed to be younger than a few hundred years. Observing a pulsar after a supernova explosion will help us understand the properties of newborn ones, including their capability to ...
S. Tanaka, K. Kashiyama
semanticscholar +1 more source
GeV Gamma-Ray Emission from Pulsar Wind Nebula HESS J1356-645 with Fermi-Large Area Telescope
The Astrophysical Journal, 2023 HESS J1356-645 is considered to be a pulsar wind nebula (PWN) associated with the pulsar PSR J1357-6429. We reanalyze the GeV gamma-ray emission in the direction of HESS J1356-645 with more than 13 yr of Fermi-Large Area Telescope data.
Xi Liu +4 more
doaj +1 more source
TeV halos and the role of pulsar wind nebulae as sources of cosmic-ray positrons [PDF]
Physical Review D, 2023 The recent detection of the Geminga PWN by HAWC in the multi-TeV band allows us to infer precious information about the transport of pairs in the immediate surroundings of the pulsar and on the spectrum of pairs contributed by a Geminga-like pulsar to ...
Benedikt Schroer +2 more
semanticscholar +1 more source
Spectral break of energetic pulsar wind nebulae detected with wideband X-ray observations [PDF]
Nippon Tenmon Gakkai obun kenkyu hokoku, 2022 Pulsar wind nebulae (PWNe) are one of the most energetic galactic sources with bright emissions from radio waves to very high-energy gamma-rays. We perform wideband X-ray spectroscopy of four energetic PWNe, N 157 B, PSR J1813−1749, PSR J1400−6325, and
A. Bamba +6 more
semanticscholar +1 more source
A Comprehensive Study of the Spectral Variation and the Brightness Profile of Young Pulsar Wind Nebulae [PDF]
Astrophysical Journal, 2022 We present a systematic study of particle transport by diffusion in young pulsar wind nebulae (PWNe). We selected nine bright sources that are well resolved with the Chandra X-ray Observatory.
Chin-Ping Hu +4 more
semanticscholar +1 more source
Population synthesis of pulsar wind nebulae and pulsar halos in the Milky Way. Predicted contributions to the very-high-energy sky [PDF]
Astronomy & Astrophysics, 2022 The discovery of extended gamma-ray emission toward a number of middle-aged pulsars suggests the possibility of long-lived particle confinement beyond the classical pulsar wind nebula (PWN) stage.
Pierrick Martin +3 more
semanticscholar +1 more source
Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Recently, the Large High Altitude Air Shower Observatory (LHAASO) reported the discovery of 12 ultrahigh-energy (UHE; ϵ ≥ 100 TeV) gamma-ray sources located in the Galactic plane. A few of these UHE gamma-ray emitting regions are in spatial coincidence
J. Joshi +3 more
semanticscholar +1 more source
Modeling the {\gamma}-ray Pulsar Wind Nebulae population in our Galaxy [PDF]
, 2022 Pulsar wind nebulae (PWNe) represent the largest class of sources that upcoming {\gamma}-ray surveys will detect. Therefore, accurate modelling of their global emission properties is one of the most urgent problems in high-energy astrophysics.
M. Fiori +9 more
semanticscholar +1 more source
Gamma-ray flares from pulsar wind nebulae in the Large Magellanic Cloud [PDF]
Monthly notices of the Royal Astronomical Society, 2022 High-energy radiation of young pulsar wind nebulae (PWNe) is known to be variable. This is exemplified by the Crab nebula which can undergo both rapid brightenings and dimmings.
B. Nizamov, M. Pshirkov
semanticscholar +1 more source