Results 71 to 80 of about 1,018 (176)

The X-ray spectrum of a hot interstellar plasma

The Astrophysical Journal Supplement Series, 1981
The soft X-ray spectrum of a hot, low density, optically thin plasma in collisional ionization equilibrium is calculated using current atomic data. Many Fe collision strengths differ from previous calculations. The spectra from individual elements are presented for use in abundance determinations from X-ray observations.
openaire   +1 more source

Production and Loss Processes of Hydrogen Energetic Neutral Atoms in the Heliosphere from 5 eV–500 keV

The Astrophysical Journal Supplement Series
Energetic neutral atom (ENA) observations provide valuable insights into the plasma conditions in the heliosphere and the surrounding interstellar medium.
Paweł Swaczyna, Maciej Bzowski, Marzena A. Kubiak   +2 more
doaj   +1 more source

MODELING JET INTERACTIONS WITH THE AMBIENT MEDIUM

Acta Polytechnica, 2013
Recent high-resolution (see, e.g., [13]) observations of astrophysical jets reveal complex structures apparently caused by ejecta from the central engine as the ejecta interact with the surrounding interstellar material.
J. H. Beall, J. Guillory, D. V. Rose, Michael T. Wolff   +3 more
doaj   +1 more source

Tidal Disruption of “Snow Clouds” by Unassociated Stars

The Astrophysical Journal
It has been suggested that star-forming galaxies may host a substantial, dark reservoir of gas in the form of planetary-mass molecular clouds that are so cold that H _2 can condense.
Arthur G. Suvorov, Mark A. Walker
doaj   +1 more source

Dispersion relation for dust charge fluctuations of multi-ion dusty plasma [PDF]

AIP Advances
In this paper, we show that dust particles embedded in plasmas may show charge variations in response to fluctuations in the oscillatory currents of the plasma species.
A. A. Abid, N. Ahmad, B. M. Alotaibi, M. S. Hussain, A. Waheed, M. N. S. Qureshi, Xiaojie Li, Guang-Rui Yao, Yan-Fang Ji   +8 more
doaj   +1 more source

A Simultaneous Dual-frequency Scintillation Arc Survey of Six Bright Canonical Pulsars Using the Upgraded Giant Metrewave Radio Telescope

The Astrophysical Journal
We use the upgraded Giant Metrewave Radio Telescope (uGMRT) to measure scintillation arc properties in six bright canonical pulsars with simultaneous dual-frequency coverage.
Jacob E. Turner, Bhal Chandra Joshi, Maura A. McLaughlin, Daniel R. Stinebring   +3 more
doaj   +1 more source

Loop I/NPS Morphology Predictions in the Ultralong-wavelength Band

The Astrophysical Journal
Loop I/North Polar Spur (NPS) is the giant arc structure above the Galactic plane observed at radio wavelengths (≲10 GHz). There has been long-standing debate about its origin. While many people believe that it consists of nearby supernova remnants (SNRs)
Yanping Cong, Bin Yue, Yidong Xu, Furen Deng, Jiajun Zhang, Xuelei Chen   +5 more
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Pulsar scintillation studies with LOFAR

Astronomy & Astrophysics
Context. The interstellar scintillation observed in radio pulsars arises from interference between electromagnetic waves scattered by electron density fluctuations in the turbulent interstellar plasma, providing a critical tool for probing the small ...
Cai Yanqing, Wu Ziwei, Zhu Weiwei, Verbiest Joris P. W., Liu Yulan, Moochickal Ambalappat Krishnakumar, Brüggen Marcus, Ciardi Benedetta, Dettmar Ralf-Jürgen, Fang Ziyao, Fu Qiuyang, Hoeft Matthias, Jin Jiawei, Künkel Lars, Künsemöller Jörn, Liu Caisong, Meng Lingqi, Miao Xueli, Niu Jiarui, Rejep Rukiya, Schwarz Dominik J., Shaifullah Golam M., Tiburzi Caterina, Vocks Christian, Wucknitz Olaf, Xue Mengyao, Yuan Mao, Yue Youling, Zhang Chunfeng, Zhang Zhen   +29 more
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Two‐dimensional Magnetohydrodynamics and Interstellar Plasma Turbulence

The Astrophysical Journal, 1999
This paper is concerned with a physical understanding of the main features of interstellar plasma turbulence. Our observational knowledge of this turbulence is provided by radio-wave propagation observations, generically referred to as interstellar scintillations.
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Angular broadening of pulsars and the distribution of interstellar plasma fluctuations

The Astrophysical Journal, 1993
Comparison of angular and temporal broadening for 10 pulsars suggests a uniform distribution of scattering material in the interstellar plasma with localized, strong scattering near young supernova remnants. Angular broadening and temporal broadening both measure the integrated strength of scattering along the line of sight, but with different ...
C. R. Gwinn, N. Bartel, J. M. Cordes
openaire   +1 more source