Results 21 to 30 of about 3,434 (238)

A HYDROGENIC MOLECULAR ATMOSPHERE OF A NEUTRON STAR

open access: yesModern Physics Letters A, 2004
A model of a hydrogenic content of atmosphere of the isolated neutron star 1E1207.4-5209 is proposed. It is based on the assumption that the main component in the atmosphere is the exotic molecular ion [Formula: see text] and that there exists a magnetic field in the range of (4±2)×1014 G .
Turbiner, A. V., Vieyra, J. C. Lopez
openaire   +2 more sources

Atmospheres and spectra of strongly magnetized neutron stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
29 pages, 11 figures; corrected factor of 2 in He models: minor changes to figs 4 and 9 as a result; other very minor ...
Ho, Wynn C. G., Lai, Dong
openaire   +2 more sources

Photoionization of Hydrogen in Atmospheres of Magnetic Neutron Stars [PDF]

open access: yesThe Astrophysical Journal, 1997
19 pages including 8 figures, LaTeX (using aas2pp4.sty and epsf.sty). Accepted for publication in ApJ.
Potekhin, A. Y., Pavlov, G. G.
openaire   +2 more sources

Model Atmospheres for Cooling Neutron Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1987
The failure of Einstein X-ray observations to detect central neutron stars in most young supernova remnants (Helfand and Becker 1984) has provided interesting constraints on cooling theories (cf. review by Tsuruta 1985). The comparison of the measured fluxes with the predicted effective temperatures is sensitive to the nature of the emitted spectrum ...
Roger W. Romani   +2 more
openaire   +2 more sources

Unfolding the Neutron Flux Spectrum on the Surface of Mars Using the MSL‐RAD and Odyssey‐HEND Data

open access: yesSpace Weather, 2023
Understanding the long‐term radiation environment at the surface of Mars allows us to estimate the exposure for future robotic and crewed missions. Typically, the radiation environment includes charged particles (i.e., protons and heavier ions) and ...
L. M. Martinez Sierra   +10 more
doaj   +1 more source

Model Atmospheres for Low-Field Neutron Stars [PDF]

open access: yesThe Astrophysical Journal, 1996
We compute model atmospheres and emergent spectra for low field (B<10^10 G) neutron stars, using new opacity and equation of state data from the OPAL project. These computations, incorporating improved treatments of flux transport and convective stability, provide spectra for hydrogen, solar abundance and iron atmospheres.
Rajagopal, Mohan, Romani, Roger
openaire   +2 more sources

A neutron star with a carbon atmosphere in the Cassiopeia A supernova remnant [PDF]

open access: yesNature, 2009
The surface of hot neutron stars is covered by a thin atmosphere. If there is accretion after neutron star formation, the atmosphere could be composed of light elements (H or He); if no accretion takes place or if thermonuclear reactions occur after accretion, heavy elements (for example, Fe) are expected.
Ho, Wynn C. G., Heinke, Craig O.
openaire   +4 more sources

Evaluation of Single Event Effect on RK3588 Neural Processing Unit Using Spallation Neutron Irradiation and Software Fault Injection

open access: yesApplied System Innovation
This research investigates atmospheric neutron-induced single event effects (SEEs) on advanced artificial intelligence (AI) chips during natural environment operation.
Weitao Yang   +4 more
doaj   +1 more source

Model Atmospheres for X-ray Bursting Neutron Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1986
Self consistent neutron star atmospheric models have been constructed which include the effects of Comptonization, free-free and bound-free absorption. It has been demonstrated that for parameters relevant to x-ray bursting neutron stars the atmosphere does not radiate like a blackbody during any phase of an x-ray burst.
R. A. London, W. M. Howard, R. E. Taam
openaire   +1 more source

Evaluation of Atmospheric Neutron Failure Rates and Damage Mechanisms of Ultra-high Voltage Thyristor for DC Transmission

open access: yesYuanzineng kexue jishu
As the core of high-voltage direct-current transmission technology, the DC converter valve and its key power device thyristor face a high risk of failure caused by atmospheric neutron when operating in high-altitude areas. The atmospheric neutron failure
PENG Chao1, ZHOU Yang2, CHEN Zhongyuan2, LEI Zhifeng1, MA Teng1, ZHANG Zhangang1, ZHANG Hong1, HE Yujuan1
doaj   +1 more source

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