Results 21 to 30 of about 1,203,998 (246)

Associations between Scattering Screens and Interstellar Medium Filaments

open access: yesThe Astrophysical Journal
Pulsar scintillation can be used to measure small-scale structure in the Galaxy, but little is known about the specific interstellar medium (ISM) features that cause scintillation.
Ashley M. Stock, Marten H. van Kerkwijk
doaj   +3 more sources

Redshift Estimation and Constraints on Intergalactic and Interstellar Media from Dispersion and Scattering of Fast Radio Bursts [PDF]

open access: yesAstrophysical Journal, 2021
A sample of 14 FRBs with measured redshifts and scattering times is used to assess contributions to dispersion and scattering from the intergalactic medium (IGM), galaxy halos, and the disks of host galaxies.
J. Cordes, S. Ocker, S. Chatterjee
semanticscholar   +1 more source

Pulsar scattering and the ionized interstellar medium [PDF]

open access: yes, 2017
Fifty years after the discovery of the first pulsating neutron star, the field of pulsar science has grown into a multidisciplinary research field, working to address a wide range of problems in astrophysics -- from stellar evolution models to high precision tests of General Relativity to analysing the detailed structure of the Interstellar Medium in ...
Geyer, Marisa, Marisa Geyer
openaire   +4 more sources

The Role of Benzonitrile Chlorination Explored by Dissociative Electron Attachment. [PDF]

open access: yesChemphyschem
Experimental and theoretical dissociative electron attachment study of 2‐ and 4‐chlorobenzonitrile. The dissociative electron attachment process to ortho‐ and para‐chlorobenzonitrile was investigated in the 0–12 eV energy range with a crossed‐beam time‐of‐flight mass spectrometer, supported by quantum chemical scattering calculations.
Guerra P   +5 more
europepmc   +2 more sources

Testing General Relativity with the Black Hole Shadow Size and Asymmetry of Sagittarius A*: Limitations from Interstellar Scattering [PDF]

open access: yesAstrophysical Journal, 2018
The Event Horizon Telescope, a global 230 GHz very-long-baseline interferometry array, achieves angular resolution of , sufficient to resolve the supermassive black hole Sagittarius A* (Sgr A*).
Ziyan Zhu   +2 more
semanticscholar   +1 more source

Time Variability of Interstellar Scattering and Improvements to Pulsar Timing [PDF]

open access: yes, 2008
Delay due to multipath scattering in the interstellar medium is a concern for high-precision pulsar timing, particularly if it is not constant over time.
D. Hemberger, D. Stinebring
semanticscholar   +2 more sources

Scattering Delay Mitigation in High-accuracy Pulsar Timing: Cyclic Spectroscopy Techniques

open access: yesThe Astrophysical Journal, 2023
We simulate scattering delays from the interstellar medium to examine the effectiveness of three estimators in recovering these delays in pulsar timing data. Two of these estimators use the more traditional process of fitting autocorrelation functions to
Jacob E. Turner   +5 more
doaj   +1 more source

Constraints on the IBEX Ribbon’s Origin from Its Evolution over a Solar Cycle

open access: yesThe Astrophysical Journal, 2023
In 2009, the Interstellar Boundary Explorer (IBEX) discovered a narrow “ribbon” of energetic neutral atom emissions across the sky with properties correlated with the solar wind latitudinal structure and the interstellar magnetic field draped around the ...
E. J. Zirnstein   +3 more
doaj   +1 more source

Technical Constraints on Interstellar Interferometry and Spatially Resolving the Pulsar Magnetosphere

open access: yesThe Astrophysical Journal, 2023
Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes in the dynamic spectra as a function of pulsar longitude were in the past interpreted as having spatially resolved ...
M. V. Popov   +8 more
doaj   +1 more source

SCATTERING OF PULSAR RADIO EMISSION BY THE INTERSTELLAR PLASMA [PDF]

open access: yesThe Astrophysical Journal, 2010
We present simulations of scattering phenomena which are important in pulsar observations, but which are analytically intractable. The simulation code, which has also been used for solar wind and atmospheric scattering problems, is available from the authors.
Coles, W. A.   +4 more
openaire   +4 more sources

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