Results 91 to 100 of about 736 (212)

Pulsar radio spectra and the interstellar scintillation [PDF]

International Astronomical Union Colloquium, 2000
Abstract A review of the pulsar radio spectra is continued. Two approches of the spectrum construction are considered. The influence of the interstellar stcintillations on the pulsar flux density measurements and spectra is examined. The description of new pulsar spectra catalog is made.
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Measurements of the interstellar turbulent plasma spectrum of PSR B0329+54 using multi-frequency observations of interstellar scintillation [PDF]

, 2003
Interstellar scintillation multi- frequency observations of PSR 0329 + 54 in the frequency range from 102 MHz to 5 GHz were analysed to estimate the spectrum of interstellar plasma inhomogeneities in the direction of this pulsar.
Sieber, W., A. Jessner, V. M. Malofeev, Potapov, V. A., V. A. Potapov, Shishov, V. I., Stinebring, D., Wielebinski, R., W. Sieber, Smirnova, T. V., D. Stinebring, Malofeev, V. M., T. V. Smirnova, Jessner, A., M. Kramer, Kramer, M., V. I. Shishov, R. Wielebinski   +17 more
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The Pulsar Science Collaboratory: Multiepoch Scintillation Studies of Pulsars

The Astrophysical Journal
We report on findings from scintillation analyses using high-cadence observations of eight canonical pulsars with observing baselines ranging from 1–3 yr.
Jacob E. Turner, Juan G. Lebron Medina, Zachary Zelensky, Kathleen A. Gustavson, Jeffrey Marx, Manvith Kothapalli, Luis D. Cruz Vega, Alexander Lee, Caryelis B. Figueroa, Daniel E. Reichart, Joshua B. Haislip, Vladimir V. Kouprianov, Steve White, Frank Ghigo, Sue Ann Heatherly, Maura A. McLaughlin   +15 more
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NE2025: An Updated Electron Density Model for the Galactic Interstellar Medium

The Astrophysical Journal
Free electrons in the Galactic interstellar medium (ISM) disperse and scatter coherent radio waves, by amounts that depend on the distance to the radio source.
Stella Koch Ocker, James M. Cordes
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Interstellar scintillation of three nearby pulsars with FAST

Journal of High Energy Astrophysics
Interstellar scintillation probes the properties of the ionized interstellar medium as well as the dynamical behavior of pulsars themselves. Using the Five-hundred-meter Aperture Spherical Radio Telescope, we obtained hour-long observations of PSRs~J0837+0610, J1136+1551, and J1239+2453.
Ying-Ying Ren, Shi-Jun Dang, Zi-Wei Wu, Yu-Lan Liu, Yan-Qing Cai, Qi-Jun Zhi, Lun-Hua Shang, Ru-Shuang Zhao   +7 more
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Long-term Monitoring of Scintillation in the Pulsar J0332+5434

The Astrophysical Journal
Changes in a pulsar’s scintillation characteristics over time can be a useful way to probe the properties of the interstellar medium. Monitoring the scintillation bandwidth can be useful for correcting for scattering delay in pulse arrival time, which ...
Grayce C. Brown, Sofia Z. Sheikh, Luigi F. Cruz, Wael Farah, Vishal Gajjar, Christian Gilbertson, Brandon Grimaldo, Michael T. Lam, Sofia L. Marquez, Maura McLaughlin, Alexander W. Pollak, Andrew Siemion, Gurmehar Singh   +12 more
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Interstellar Scintillations and Neutron Star Kinematics [PDF]

Symposium - International Astronomical Union, 1987
The interstellar scintillation technique for measuring neutron star speeds is described and results are given for 71 radio pulsars. The mean transverse neutron star speed is 100 km s−1 and the distribution extends to 300 km s−1. The transverse speed correlates with the z velocity derived independently using distance from the galactic plane, consistent ...
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Transient Blurring of the Scintillation Arc of Pulsar B1737+13

The Astrophysical Journal
For many pulsars, the scattering structures responsible for scintillation are typically dominated by a single, thin screen along the line of sight, which persists for years or decades.
Yen-Hua Chen, Sammy Siegel, Daniel Baker, Ue-Li Pen, Dan Stinebring   +4 more
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Imaging without visibilities

Astronomy & Astrophysics
Context. The spatially coherent multipath propagation of pulsar radiation leads to a temporal and spectral interference patterns called scintillation.
Sprenger Tim, Shi Xun, Wucknitz Olaf, Main Robert A.   +3 more
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Pulsar scintillation through thick and thin: bow shocks, bubbles, and the broader interstellar medium [PDF]

Observations of pulsar scintillation are among the few astrophysical probes of very small-scale ( au) phenomena in the interstellar medium (ISM). In particular, characterization of scintillation arcs, including their curvature and intensity distributions,
McKee, James W., Ocker, Stella Koch, Stinebring, Daniel R, Dolch, Timothy, Chatterjee, Shami, Cordes, James M, Reardon, Daniel J., Pelgrims, Vincent, Giannakopoulos, Christos   +8 more
core   +1 more source