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The Young Pulsar J1357-6429 and Its Pulsar Wind Nebula
Pulsar Pulsar Wind Nebula
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2011/9/30
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 bla...
Post-Periastron Gamma Ray Flare from PSR~B1259-63/LS 2883 as a Result of Comptonization of the Cold Pulsar Wind
Comptonization Cold Pulsar Wind
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2011/10/19
The recent detection of gamma rays with the {\it Fermi} Large Area Telescope (LAT) from the binary system PSR B1259-63/LS2883 provides unique information about the pulsar wind. Although the nature of ...
Modelling interaction of relativistic and non-relativistic winds in binary system PSR B1259-63/SS2883 - II. Impact of magnetization and anisotropy of the pulsar wind
HD – shock waves - pulsars: binaries
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2011/10/19
In this paper, we present a numerical study of the properties of the flow produced by the collision of a magnetized anisotropic pulsar wind with its environment in binary system. We compare the impact...
Ultraviolet Coronagraph Spectroscopy: A Key Capability for Understanding the Physics of Solar Wind Acceleration
Ultraviolet Coronagraph Spectroscopy Physics of Solar Wind Acceleration
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2010/11/15
Understanding the physical processes responsible for accelerating the solar wind requires detailed measurements of the collisionless plasma in the extended solar corona. Some key clues about these pro...
A Critical Examination of the X-Wind Model for Chondrule and Calcium-rich, Aluminum-rich Inclusion Formation and Radionuclide Production
Critical Examination Chondrule Calcium-rich Radionuclide Production
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2010/11/16
Meteoritic data, especially regarding chondrules and calcium-rich, aluminumrich inclusions (CAIs), and isotopic evidence for short-lived radionuclides (SLRs)in the solar nebula, potentially can constr...
An unified polar cap/striped wind model for pulsed radio and gamma-ray emission in pulsars
Pulsars general - Radiation mechanisms non-thermal - Gamma rays
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2010/11/16
Thanks to the recent discovery by Fermi of about fifty new gamma-ray pulsars, it becomes possible to look for statistical properties of their pulsed high-energy emis-sion, especially their light-curve...
Impact of MHD Turbulence on Thermal Wind Balance in the Sun
instabilities—rotation—sun magnetohydrodynamics— stars sun
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2010/11/15
The possible role of magneto-rotational instability (MRI) and its driven MHD turbulence in
the solar interior is studied on the basis of the linear and nonlinear theories coupling with
physical para...
Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results
Venus Wind Clouds Visible Spectrometry
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2010/11/15
Solar light gets scattered at cloud top level in Venus’ atmosphere, in the visible range, which corresponds to the altitude of 67 km. We present Doppler velocity measurements performed with the high r...
Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars
catalogs – gamma rays observations – pulsars general
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2010/11/12
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 ...
Spectral Cross-calibration of the Konus-Wind, the Suzaku/WAM, and the Swift/BAT Data using Gamma-Ray Bursts
gamma rays observations
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2010/11/11
We report on the spectral cross-calibration results of the Konus-Wind, the Suzaku/WAM, and the Swift/BAT instruments using simultaneously observed gamma-ray bursts (GRBs). This is the first attempt to...
On the Distance and Age of the Pulsar Wind Nebula 3C58
the Distance the Pulsar Wind Nebula 3C58
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2011/1/10
There is a growing community of astronomers presenting evidence that the pulsar wind nebula 3C58 is much older than the connection with the historical supernova of A.D 1181 would indicate. Most of the...
Gamma-rays from Pulsar Wind Nebulae in Starburst galaxies (HEAD 2010)
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/29
Recently, two nearby prominent starburst galaxies, M82 and NGC253, have been detected as point-like sources with gamma-ray telescopes at TeV energies [1] [2]. It has been claimed that these detections...
Gamma-rays from pulsar wind nebulae in starburst galaxies
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/28
Recently, gamma ray emission at TeV energies has been detected from the starburst galaxies NGC253 [1] and M82 [2].
Is the Wind of the Galactic Oe Star HD 155806 Magnetically Confined?
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/29
Spectropolarimetric observations of HD 155806 - the hottest Galactic Oe star - were obtained with CFHT/ESPaDOnS to test the hypothesis that disk signatures in its spectrum are due to magnetic channeli...
The G292.0+1.8 pulsar wind nebula in the mid-infrared
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/28
G292.0+1.8 is a Cas A-like supernova remnant that contains the young pulsar PSR J1124-5916 powering a compact torus-like pulsar wind nebula visible in X-rays. A likely counterpart to the nebula has be...