中文
相关论文

相关论文: Is there room for highly magnetized pulsar wind ne…

200 篇论文

Using the Australia Telescope Compact Array (ATCA) we have imaged the fields around five promising pulsar candidates to search for radio pulsar wind nebulae (PWNe). We have used the ATCA in its pulsar gating mode; this enables an image to…

天体物理学 · 物理学 2009-10-31 B. W. Stappers , B. M. Gaensler , S. Johnston

Several Pulsar Wind Nebulae (PWNe) have been detected in the TeV band in the last decade.The TeV emission is typically interpreted in a purely leptonic scenario, but this usually requires that the magnetic field in the Nebula be much lower…

高能天体物理现象 · 物理学 2017-02-22 Irene Di Palma , Dafne Guetta , Elena Amato

The high sensitivity of the Fermi-LAT (Large Area Telescope) offers the first opportunity to study faint and extended GeV sources such as pulsar wind nebulae (PWNe). After one year of observation the LAT detected and identified three pulsar…

高能天体物理现象 · 物理学 2011-01-28 The Fermi LAT Collaboration , Pulsar Timing Consortium

While pulsar wind nebulae (PWNe) and their associated isolated pulsars are commonly detected at X-ray energies, they are much rarer at near infrared (nIR) and optical wavelengths. Here we examine three PWN systems in the Galactic plane -…

高能天体物理现象 · 物理学 2015-05-30 P. A. Curran , S. Chaty , J. A. Zurita Heras , A. Coleiro

Pulsar Wind Nebulae (PWNe) shine at multi-wavelengths and are expected to constitute the largest class of gamma-ray sources in our Galaxy. They are known to be very efficient particle accelerators: the Crab nebula, the PWNe class prototype,…

高能天体物理现象 · 物理学 2023-03-27 Barbara Olmi

The last few years have seen a revolution in very-high gamma-ray astronomy (VHE; E>100 GeV) driven largely by a new generation of Cherenkov telescopes (namely the H.E.S.S. telescope array, the MAGIC and MAGIC-II large telescopes and the…

We report on a sensitive survey for radio pulsar wind nebulae (PWN) towards 27 energetic and/or high velocity pulsars. Observations were carried out at 1.4 GHz using the Very Large Array and the Australia Telescope Compact Array, and…

天体物理学 · 物理学 2015-06-24 B. M. Gaensler , B. W. Stappers , D. A. Frail , D. A. Moffett , S. Johnston , S. Chatterjee

In the last decade, ground-based Imaging Atmospheric Cherenkov Telescopes have discovered about 175 very-high-energy (VHE; $E >$ 100 GeV) gamma-ray sources, with more to follow with the development of H.E.S.S. II and CTA. Nearly 40 of these…

高能天体物理现象 · 物理学 2018-02-02 Carlo van Rensburg , Christo Venter , Paulus Kruger

There are at least 125 Galactic pulsar wind nebulae (PWNe) that have been discovered from radio wavelengths to TeV gamma-rays, the majority of which were first identified in radio or X-ray surveys. An increasing number of PWNe are being…

高能天体物理现象 · 物理学 2022-09-27 Jordan Lynn Eagle

We review properties of Galactic VHE sources detected at TeV energies. The number of associations between the VHE sources and pulsars has grown in recent years, making pulsar-wind nebulae the dominant population, although there is still a…

高能天体物理现象 · 物理学 2013-05-14 Oleg Kargaltsev , Blagoy Rangelov , George G. Pavlov

We investigate the time-dependent behavior of Crab-like pulsar wind nebulae (PWNe) generating a set of models using 4 different initial spin-down luminosities ($L_0 =\{1,0.1,0.01,0.001\} \times L_{0, {\rm Crab}}$), 8 values of magnetic…

高能天体物理现象 · 物理学 2015-06-17 D. F. Torres , J. Martin , E. de Oña Wilhelmi , A. Cillis

Of the known pulsar wind nebulae, 8 are good candidates for being in the early stage of evolution where the wind nebula is interacting with the freely expanding supernova ejecta. Several of these have been identified with historical…

天体物理学 · 物理学 2009-11-07 Roger A. Chevalier

Pulsar wind nebulae (PWNe) constitute the largest population of Galactic very-high-energy (VHE; $E > 100$ GeV) $\gamma$-ray sources and are key laboratories for studying particle acceleration and pulsar--supernova remnant (SNR)…

高能天体物理现象 · 物理学 2026-05-18 A. De Sarkar , D. F. Torres , B. Olmi , N. Bucciantini , D. M. -A. Meyer

We consider a situation in which a pulsar is formed inside or close to a high density region of a molecular cloud. Right after birth, the pulsar was very active and accelerated hadrons and leptons to very high energies. Hadrons diffuse…

天体物理学 · 物理学 2009-11-13 H. Bartko , W. Bednarek

The shock wave of supernova remnants (SNRs) and the wind termination shock in pulsar wind nebula (PWNe) are considered as prime candidates to accelerate the bulk of Galactic cosmic ray (CR) ions and electrons. The SNRs hosting a PWN (known…

高能天体物理现象 · 物理学 2019-08-14 F. Acero , A. Djannati-Ataï , A. Förster , Y. Gallant , M. Renaud

The 1968 discovery of the Crab and Vela pulsars in their respective supernova remnants (SNRs) confirmed Baade and Zwicky's 1934 prediction that supernovae form neutron stars. Observations of Pulsar Wind Nebulae (PWNe), particularly with the…

星系天体物理 · 物理学 2015-06-12 Samar Safi-Harb

We investigate the interstellar medium (ISM) towards seven TeV gamma-ray sources thought to be pulsar wind nebulae (PWNe) using Mopra molecular line observations at 7mm [CS(1-0), SiO(1-0,v=0)], Nanten CO(1-0) data and the SGPS/GASS HI…

高能天体物理现象 · 物理学 2020-08-10 F. J. Voisin , G. P. Rowell , M. G. Burton , Y. Fukui , H. Sano , F. Aharonian , N. Maxted , C. Braiding , R. Blackwell , J. Lau

We present the discovery of two very-high-energy gamma-ray sources in an ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data from the H.E.S.S. telescope array. Imaging Atmospheric Cherenkov…

天体物理学 · 物理学 2012-08-27 H. E. S. S. Collaboration , : , F. Aharonian

Young pulsars produce relativistic winds which interact with matter ejected during the supernova explosion and the surrounding interstellar gas. Particles are accelerated to very high energies somewhere in the pulsar winds or at the shocks…

天体物理学 · 物理学 2008-11-26 W. Bednarek

We observed the young pulsar J1357--6429 with the {\it Chandra} and {\it XMM-Newton} observatories. The pulsar spectrum fits well a combination of absorbed power-law model ($\Gamma=1.7\pm0.6$) and blackbody model ($kT=140^{+60}_{-40}$ eV,…

高能天体物理现象 · 物理学 2015-05-28 Chulhoon Chang , George G. Pavlov , Oleg Kargaltsev , Yurii A. Shibanov