Results 21 to 30 of about 736 (212)

Pulsar scintillation studies with LOFAR I. The census [PDF]

, 2022
Interstellar scintillation (ISS) of pulsar emission can be used both as a probe of the ionized interstellar medium (IISM) and cause corruptions in pulsar timing experiments.
Verbiest, Joris P. W., Serylak, Maciej, Wu, Ziwei   +2 more
core   +3 more sources

A Multi‐Purpose Heliophysics L4 Mission

Space Weather, Volume 19, Issue 9, September 2021., 2021
Abstract The Earth‐Sun Lagrangian point 4 is a meta‐stable location at 1 AU from the Sun, 60° ahead of Earth's orbit. It has an uninterrupted view of the solar photosphere centered on W60, the Earth's nominal magnetic field connection to the Sun. Such a mission on its own would serve as a solar remote sensing observatory that would oversee the entire ...
A. Posner, C. N. Arge, J. Staub, O. C. StCyr, D. Folta, S. K. Solanki, R. D. T. Strauss, F. Effenberger, A. Gandorfer, B. Heber, C. J. Henney, J. Hirzberger, S. I. Jones, P. Kühl, O. Malandraki, V. J. Sterken   +15 more
wiley   +1 more source

Scintillation Arc from FRB 20220912A [PDF]

, 2023
We present the interstellar scintillation analysis of fast radio burst (FRB) 20220912A during its extremely active episode in 2022 using data from the Five-hundred-meter Aperture Spherical Radio Telescope (FAST).
Niu, Jia-Rui, Main, Robert A., Niu, Chen-Hui, Zhang, Yong Kun, Wu, Zi-Wei, Deng, Can-Min, Xu, Yong-Hua, Lee, Ke-Jia, Jiang, Peng, Yang, Yuan-Pei, Wang, Fa-Yin, Han, Jin Lin, Li, Dong-Zi, Zhu, Wei Wei, Feng, Yi, Wang, Bo Jun, Wang, Fa Yin, Zhu, Yu-Hao, Xu, Yong Hua, Zhu, Wei-Wei, Zhang, Bing, Li, Dong Zi, Lee, Ke Jia, Wang, Bo-Jun, Niu, Chen Hui, Zhu, Yu Hao, Luo, Rui, Zhou, De Jiang, Zhou, De-Jiang, Deng, Can Min, Han, Jin-Lin, Li, Di, Wang, Pei, Xu, Heng, Wang, Wei-Yang, Zhang, Yong-Kun, Niu, Jia Rui, Wang, Wei Yang, Wu, Zi Wei, Yang, Yuan Pei   +39 more
core   +2 more sources

Directionality of the Martian Surface Radiation and Derivation of the Upward Albedo Radiation

Geophysical Research Letters, Volume 48, Issue 15, August 2021., 2021
Abstract Since 2012 August, the Radiation Assessment Detector (RAD) on the Curiosity rover has been characterizing the Martian surface radiation field which is essential in preparation for future crewed Mars missions. RAD observed radiation dose is influenced by variable topographical features as the rover traverses through the terrain.
Jingnan Guo, Salman Khaksarighiri, Robert F. Wimmer‐Schweingruber, Donald M. Hassler, Bent Ehresmann, Cary Zeitlin, Sven Löffler, Daniel Matthiä, Thomas Berger, Günther Reitz, Fred Calef   +10 more
wiley   +1 more source

Interstellar Scintillation of PSR J0437−4715 on Two Scales? [PDF]

, 2005
Aims.We sought to determine the scale of scintillation in the interstellar plasma of PSR J0437−4715. Methods.We used the Very Long Baseline Array to obtain scintillation amplitude and phase data, from dynamic spectra at 327 MHz. Results.
C. Hirano, S. Boldyrev, C. R. Gwinn
core   +1 more source

INVESTIGATION OF THE IONIZED COMPONENT OF THE LOCAL INTERSTELLAR MEDIUM

Odessa Astronomical Publications, 2017
Based upon numerous observational data of variability in extragalactic radiosources of the southern sky at low frequences the possibility of obtaining information on ionized component structure in the Local Interstellar Medium (LISM) is investigate.
N. G. Bochkarev, M. I. Ryabov, E. A. Isaeva   +2 more
doaj   +1 more source

Interstellar Scintillation of Pulsar B0809+74 [PDF]

The Astrophysical Journal, 2000
Weak interstellar scintillations of pulsar B0809+74 were observed at two epochs using a 30m EISCAT antenna at 933 MHz. These have been used to constrain the spectrum, the distribution and the transverse velocity of the scattering plasma with respect to the local standard of rest (LSR).
Rickett, Barney, Coles, Bill, Markkanen, Jussi   +2 more
openaire   +2 more sources

Electronic spectroscopy of cold cations in a 22-pole trap by indirect methods [PDF]

, 2013
The confining capabilities of a 22-pole ion trap have been employed to mea- sure electronic spectra of cations of astrophysical relevance. The ion trap sits on the head of a closed cycle cryostat, enabling collisional cooling of the confined ions with
Chakrabarty, Satrajit
core   +1 more source

Search for Turbulent Gas through Interstellar Scintillation [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractStars twinkle because their light propagates through the atmosphere. The same phenomenon is expected when the light of remote stars crosses a Galactic—disk or halo—refractive medium such as a molecular cloud. We present the promising results of a test performed with the ESO–NTT, and consider its potential.
Moniez, Marc, Ansari, R., Habibi, F., Rahvar, S.   +3 more
openaire   +3 more sources

Asymmetry function of interstellar scintillations of pulsars

Astronomy Reports, 2005
A new method for separating intensity variations of a source's radio emission having various physical natures is proposed. The method is based on a joint analysis of the structure function of the intensity variations and the asymmetry function, which is a generalization of the asymmetry coefficient and characterizes the asymmetry of the distribution ...
Shishov, V. I., Smirnova, T. V.
openaire   +2 more sources