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Dawn-dusk asymmetry in bursty hot electron enhancements in the midtail magnetosheath
Wang, Chih-Ping; Nakamura, T. K. M.; Lyons, Larry R. +1 more
Bursty (a few minutes) enhancements of hot electrons (1-10 keV) in the tail magnetosheath, which we name hot electron enhancements (HEEs), are sometimes observed. To understand the processes leading to HEEs, we have used 4 years of measurements from Acceleration Reconnection Turbulence and Electrodynamics of Moon's Interaction with the Sun mission…
Magnetic fields near spacecraft-explored comets: 3D MHD numerical simulation
Baranov, V. B.; Alexashov, D. B.; Lebedev, M. G.
The magnetohydrodynamic (MHD) model of the interaction between the solar wind and a cometary ionosphere is presented. The model accounts for photoionization of the neutral component of the cometary outflow and the resonance charge exchange between charged and neutral particles, together with the interplanetary magnetic field. The numerical impleme…
Total Solar Irradiance Monitor for the FY-3B Satellite - Space Experiments and Primary Data Corrections
Wang, Hongrui; Li, Huiduan; Qi, Jin +1 more
We present space experiments of the Total Solar Irradiance Monitor (TSIM) on the FY-3B satellite. The total solar irradiance (TSI) has been measured by TSIM/FY-3B continuously for nearly four years, with some short data gaps. Overlapping measurements of the TSI are provided by the TSIM, with three electrical substitution radiometers that are mount…
A research on the force-freeness of photosphere magnetic field
Hao, J.; Liu, S.
In this paper, the statistical studies on the force-freeness of photosphere magnetic fields are given. The studies are based on the vector magnetic fields observed by Solar Optical Telescope/Spectro-Polarimeter (SOT/SP) on board Hinode. Three parameters (Fx /Fp,Fy /Fp , and Fz /Fp) …
CONSERT line-of-sight link budget simulator
Plettemeier, Dirk; Kofman, Wlodek; Herique, Alain +4 more
In bistatic radar systems utilizing elliptical polarization on both the sending and receiving side, great care must be taken to correctly calculate the received power, as a mismatch in polarization may incur significant additional losses. In this paper, we present a method to simulate the link budget of the CONSERT instrument aboard the Rosetta mi…
The distance to the Galactic center determined by A–F stars
Branham, Richard L.
The distance from the sun to the center of the Galaxy
Gamma rays and cosmic rays at Venus: The Pioneer Venus gamma ray detector and considerations for future measurements
Lorenz, Ralph D.; Lawrence, David J.
We draw attention to, and present a summary archive of the data from, the Pioneer Venus Orbiter Gamma-ray Burst Detector (OGBD), an instrument not originally conceived with Venus science in mind. We consider the possibility of gamma-ray flashes generated by lightning and model the propagation of gamma rays in the Venusian atmosphere, finding that …
Was Comet C/1945 X1 (DU Toit) a Dwarf, SOHO-like Kreutz Sungrazer?
Sekanina, Zdenek; Kracht, Rainer
The goal of this investigation is to reinterpret and upgrade the astrometric and other data on comet C/1945 X1, the least prominent among the Kreutz system sungrazers discovered from the ground in the twentieth century. The central issue is to appraise the pros and cons of a possibility that this object is—despite its brightness reported at discov…
Better Alternatives to "Astronomical Silicate": Laboratory-based Optical Functions of Chondritic/Solar Abundance Glass with Application to HD 161796
Speck, A. K.; Pitman, K. M.; Hofmeister, A. M.
“Astronomical” or “circumstellar” silicate optical functions (real and imaginary indices of refraction n(λ ) and k(λ )) have previously been derived from compositionally and structurally disparate samples; past values were compiled from different sources in the literature, and are essentially kluges of observational, laboratory, and extrapolated o…
Statistical and Scaling Features of Fluctuations in the Dissipation Range During a Reconnection Event
Consolini, G.; Marcucci, M. F.; Pallocchia, G. +2 more
Reconnection events in space plasmas are accompanied by the occurrence of large-amplitude turbulent fluctuations of the magnetic and electric field, covering a wide range of temporal and spatial scales. Here, we study the scaling and statistical features of magnetic and electric field fluctuations below the ion-gyroperiod (i.e., in the dissipation…