The NANOGrav 12.5 Year Data Set: Monitoring Interstellar Scattering Delays [PDF]
Astrophysical Journal, 2020 We extract interstellar scintillation parameters for pulsars observed by the NANOGrav radio pulsar timing program. Dynamic spectra for the observing epochs of each pulsar were used to obtain estimates of scintillation timescales, scintillation bandwidths,
J. Turner +35 more
semanticscholar +3 more sources
Locating the intense interstellar scattering towards the inner Galaxy [PDF]
, 2017 We use VLBA+VLA observations to measure the sizes of the scatter-broadened images of 6 of the most heavily scattered known pulsars: 3 within the Galactic Centre (GC) and 3 elsewhere in the inner Galactic plane.
J. Dexter +14 more
semanticscholar +6 more sources
THE NANOGRAV NINE-YEAR DATA SET: MONITORING INTERSTELLAR SCATTERING DELAYS [PDF]
, 2016 We report on an effort to extract and monitor interstellar scintillation parameters in regular timing observations collected for the North American Nanohertz Observatory for Gravitational Waves pulsar timing array.
L. Levin +29 more
semanticscholar +5 more sources
The high brightness temperature of B0529+483 revealed by RadioAstron and implications for interstellar scattering [PDF]
, 2017 The high brightness temperatures, $T_\mathrm{b}\gtrsim 10^{13}$ K, detected in several active galactic nuclei by RadioAstron space VLBI observations challenge theoretical limits.
S. V. Pilipenko +24 more
semanticscholar +7 more sources
Inverse Raman Scattering and the Diffuse Interstellar Bands: An Exploration of the Systemic Interconnections between Spontaneous and Inverse Raman Scattering and Extended Red Emission, Red Rectangle Bands, and Diffuse Interstellar Bands [PDF]
The Astrophysical JournalFirst identified in 1964, inverse Raman scattering (IRS) is a nonlinear stimulated phenomenon that induces Raman-scattered absorptions where Raman emissions would be expected.
Frédéric Zagury
doaj +5 more sources
Interstellar scattering — New diagnostics of pulsars and the ISM [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractExtreme Scattering Events and pulsar secondary spectra have highlighted fundamental problems in our understanding of the dynamics of interstellar turbulence. We describe some of these problems in detail and present the theory behind the technique of speckle imaging, which offers a prospect of revealing fundamental properties of the turbulence ...
Macquart, Jean-Pierre
openaire +4 more sources
IBEX Observations of Elastic Scattering of Interstellar Helium by Solar Wind Particles [PDF]
The Astrophysical JournalThe IBEX-Lo instrument on the Interstellar Boundary Explorer (IBEX) mission observes primary and secondary interstellar helium in its four lowest energy steps.
Hafijul Islam +10 more
doaj +3 more sources
The complex polarization angles of radio pulsars: orthogonal jumps and interstellar scattering [PDF]
, 2009 Despite some success in explaining the observed polarization angle swing of radio pulsars within the geometric rotating vector model, many deviations from the expected S-like swing are observed.
A. Karastergiou
semanticscholar +3 more sources
Positron scattering from interstellar phosphorus-bearing compounds. [PDF]
RSC AdvThis article reports an investigation of positron impact scattering from several phosphorus-bearing compounds detected in the interstellar medium.
Chakraborty I, Uddin N, Antony B.
europepmc +3 more sources
Absorption and scattering by interstellar dust in the silicon K-edge of GX 5-1 [PDF]
, 2016 Context. We study the absorption and scattering of X-ray radiation by interstellar dust particles, which allows us to access the physical and chemical properties of dust. The interstellar dust composition is not well understood, especially on the densest
S. Zeegers +14 more
semanticscholar +4 more sources