Results 111 to 120 of about 79,833 (199)

Estimation and correction of scintillation effects on spaceborne P-band SAR images [PDF]

, 2012
A correction method for distortions induced by ionospheric scintillation effects on P-band quad-pol synthetic aperture radar (SAR) data acquired in polar and high latitude regions is presented.
Konstantinos P. Papathanassiou, Papathanassiou, Kostas, Jun Su Kim, Shaun Quegan, Quegan, Shaun, Rogers, Neil, Kim, Jun Su, Papathanassiou, Konstantinos, Neil Rogers   +8 more
core   +1 more source

A Statistical Analysis of Crab Pulsar Giant Pulse Rates

The Astrophysical Journal
A small number of pulsars are known to emit giant pulses (GPs), single pulses much brighter than average. Among these is PSR J0534+2200, also known as the Crab pulsar, a young pulsar with high GP rates. Long-term monitoring of the Crab pulsar presents an
Graham M. Doskoch, Andrea Basuroski, Kriisa Halley, Avinash Sookram, Iliomar Rodriguez-Ramos, Valmik Nahata, Zahi Rahman, Maureen Zhang, Ashish Uhlmann, Abby Lynch, Natalia Lewandowska, Nohely Miranda, Ann Schmiedekamp, Carl Schmiedekamp, Maura A. McLaughlin, Daniel E. Reichart, Joshua B. Haislip, Vladimir V. Kouprianov, Steve White, Frank Ghigo, Sue Ann Heatherly   +20 more
doaj   +1 more source

Oblique and rippled heliosphere structures from the Interstellar Boundary Explorer. [PDF]

Nat Astron, 2022
Zirnstein EJ, Shrestha BL, McComas DJ, Dayeh MA, Heerikhuisen J, Reisenfeld DB, Sokół JM, Swaczyna P.   +7 more
europepmc   +1 more source

Microarcsecond structure of an AGN Jet via Interstellar Scintillation

, 2015
We have used the broadband backend available at the ATCA to study the fast interstellar scintillation of quasar PKS 1257-326, resolving the core shift as a function of frequency on scales less than 10 microarcseconds.
Bignall, H., Macquart, Jean-Pierre, Jauncey, D., Godfrey, L., Hodgson, J., Macquart, J.   +5 more
core   +2 more sources

Scintillation Bandwidth Measurements from 23 Pulsars from the AO327 Survey

The Astrophysical Journal
A pulsar’s scintillation bandwidth is inversely proportional to the scattering delay, making accurate measurements of scintillation bandwidth critical to characterize unmitigated delays in efforts to measure low-frequency gravitational waves with pulsar ...
Sofia Sheikh, Grayce C. Brown, Jackson MacTaggart, Thomas Nguyen, William D. Fletcher, Brenda L. Jones, Emma Koller, Veronica Petrus, Katie F. Pighini, Gray Rosario, Vincent A. Smedile, Adam T. Stone, Shawn You, Maura A. McLaughlin, Jacob E. Turner, Julia S. Deneva, Michael T. Lam, Brent J. Shapiro-Albert   +17 more
doaj   +1 more source

The Structure of the Large-Scale Heliosphere as Seen by Current Models. [PDF]

Space Sci Rev, 2022
Kleimann J, Dialynas K, Fraternale F, Galli A, Heerikhuisen J, Izmodenov V, Kornbleuth M, Opher M, Pogorelov N.   +8 more
europepmc   +1 more source

Scintillation-induced variability in radio absorption spectra against extragalactic sources

, 2005
Spectral features absorbed against some radio quasars exhibit ~50 mJy variations, with the lines varying both relative to the continuum and, when several lines are present, even relative to one another.
Jean-pierre Macquart (23310469)
core  

Refractive interstellar scintillation of radio sources

The Astrophysical Journal, 1986
On propose une theorie simplifiee pour le phenomene de scintillation interstellaire refractive et on l'examine en tant qu'interpretation possible des variations observees pour de nombreuses ...
openaire   +1 more source

Direct Very Long Baseline Interferometry Detection of Interstellar Turbulence Imprint on a Quasar: TXS 2005+403

The Astrophysical Journal Letters
We report the first unambiguous detection of refractive substructure in an active galactic nucleus (AGN) using ground-based very long baseline interferometry (VLBI).
A. V. Plavin, A. B. Pushkarev, Y. Y. Kovalev   +2 more
doaj   +1 more source

FAST: Its Scientific Achievements and Prospects. [PDF]

Innovation (Camb), 2020
Qian L, Yao R, Sun J, Xu J, Pan Z, Jiang P.   +5 more
europepmc   +1 more source