Results 21 to 30 of about 39,097 (209)
Diagnostics from Polarization of Scattered Optical Light from Galactic Infrared Cirrus
The Astrophysical Journal, 2023 We propose polarization of scattered optical light from intermediate Galactic latitude infrared cirrus as a new diagnostic to constrain models of interstellar dust and the anisotropic interstellar radiation field (aISRF).
Shannon K. Bowes, Peter G. Martin
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Turbulence Driving by Interstellar Pickup Ions in the Outer Solar Wind
The Astrophysical Journal, 2023 We revisit the question of how the unstable scattering of interstellar pickup ions (PUIs) may drive turbulence in the outer solar wind and why the energy released into fluctuations by this scattering appears to be significantly less than the standard ...
Philip A. Isenberg +2 more
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The Astrophysical Journal, 2023 Interstellar neutral (ISN) helium atoms penetrating the heliosphere are used to find the flow velocity and temperature of the very local interstellar medium near the heliosphere.
P. Swaczyna +3 more
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Interstellar Scattering: Observations and Interpretations [PDF]
International Astronomical Union Colloquium, 1996 Abstract The successful theory for radio propagation through the interstellar plasma is reviewed, where the density spectrum follows the Kolmogorov model. However, there are also several observations indicating more refraction than expected. A particular model of enhanced refraction is proposed in which isolated regions of the warm ionized medium ...
openaire +1 more source
The Power of the Rings: The GRB 221009A Soft X-Ray Emission from Its Dust-scattering Halo
The Astrophysical Journal Letters, 2023 GRB 221009A is the brightest gamma-ray burst (GRB) ever detected that has occurred at low Galactic latitude. Owing to this exceptional combination, its prompt X-ray emission could be detected for weeks in the form of expanding X-ray rings produced by ...
Andrea Tiengo +13 more
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Small-Scale Variations of HI Spectra from Interstellar Scintillatio [PDF]
, 2001 I suggest that radio-wave scattering by the interstellar plasma, in combination with subsonic gradients in the Doppler velocity of interstellar HI, is responsible for the observed small-scale variation in HI absorption spectra of pulsars.
C. R. Gwinn +5 more
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The Mystery of the Cosmic Diffuse Ultraviolet Background Radiation [PDF]
, 2014 The diffuse cosmic background radiation in the GALEX far ultraviolet (FUV, 1300 \AA\ - 1700 \AA) is deduced to originate only partially in the dust-scattered radiation of FUV-emitting stars: the source of a substantial fraction of the FUV background ...
Henry, Richard Conn +3 more
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X-ray Halos and Large Grains in the Diffuse Interstellar Medium [PDF]
, 2001 Recent observations with dust detectors on board the interplanetary spacecraft Ulysses and Galileo have recorded a substantial flux of large interstellar grains with radii between 0.25 and 2.0 mu entering the solar system from the local interstellar ...
Adolf N. Witt +11 more
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Speckles in Interstellar Radio-Wave Scattering [PDF]
International Astronomical Union Colloquium, 1991 AbstractObservations of speckles in the scattering disk of the Vela pulsar are presented and speckle techniques for studying and circumventing scattering of radio waves by the turbulent interstellar plasma are discussed. The speckle pattern contains, in a hologrammatic fashion, complete information on the structure of the radio source as well as the ...
K. M. Desai +8 more
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Scattering by Interstellar Dust Grains. II. X-Rays
, 2003 Scattering and absorption of X-rays by interstellar dust is calculated for a model consisting of carbonaceous grains and amorphous silicate grains. The calculations employ realistic dielectric functions with structure near X-ray absorption edges, with ...
B. T. Draine +7 more
core +2 more sources