Results 81 to 90 of about 79,833 (199)
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
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Plasma Lensing Modeling of Substructures on Pulsar Scintillation Screens
The Astronomical JournalRadio pulsars, as highly coherent point sources, serve as powerful probes of the ionized interstellar medium (IISM). Pulsar scintillation observations have revealed inverted arclets on the secondary spectrum, indicating quasilinearly aligned images ...
Zhu Xu, Xun Shi
doaj +1 more source
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 ...
openaire +1 more source
The Astrophysical JournalAs lensing of coherent astrophysical sources, e.g., pulsars, fast radio bursts, and gravitational waves, becomes observationally relevant, the mathematical framework of Picard–Lefschetz theory has recently been introduced to fully account for wave optics
Xun Shi
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Scintillation of the First-known Pulsar Planetary System
The Astrophysical JournalWe present a scintillation study of the first-known pulsar planetary system, PSR B1257+12, using the Five-hundred-meter Aperture Spherical radio Telescope. A total of 31 observations with durations greater than or equal to 30 minutes were analyzed.
J. M. Yao +10 more
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Towards achieving low background levels in routine dating by liquid scintillation spectrometry [PDF]
, 2004 International radiocarbon intercalibration studies have revealed that radiometric laboratories using liquid scintillation (LS) spectrometry of benzene reported, on average, younger ages for near-background standards than either gas proportional counter ...
Hogg, Alan G.
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Interstellar scintillation, AGN physics and the SKA [PDF]
, 2008 A large fraction of compact, extragalactic radio sources exhibit rapid variability at centimetre wavelengths as their radio emission is scattered by electron density fluctuations in the interstellar medium of the Galaxy.
L. Kedziora-Chudczer (19001255) +10 more
core +1 more source
The Astrophysical JournalWe use the upgraded Giant Metrewave Radio Telescope (uGMRT) to measure scintillation arc properties in six bright canonical pulsars with simultaneous dual-frequency coverage.
Jacob E. Turner +3 more
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Interstellar Scintillation of PSR J0437−4715 on Two Scales?
, 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
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Geomagnetic storm-time scintillation study in Antarctica - A comparison of model and observation
, 2021 The polar region is the gateway of the magnetospheric processes induced due to the solar events; through which Sun-illuminated plasma enter into the polar ionosphere.
S. Priyadarshi +5 more
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