scholarly journals Design of a Prototype Readout Electronics for a Low-energy Ion Spectrometer in Near-earth Space

2019 ◽  
Author(s):  
Zhenyu Sun ◽  
Zhe Cao ◽  
Guangyuan Yuan ◽  
Shuwen Wang ◽  
Yiren Li ◽  
...  
Keyword(s):  
Low Energy ◽  
Readout Electronics ◽  
Earth Space ◽  
Near Earth Space

Experiment NINA: investigation of low energy nuclear fluxes in the near-Earth space

1997 ◽  
Vol 8 (1-2) ◽  
pp. 109-121 ◽  
Author(s):  
A. Bakaldin ◽  
G. Barbiellini ◽  
S. Bartalucci ◽  
A. Batishev ◽  
R. Bellotti ◽  
...  
Keyword(s):  
Low Energy ◽  
Earth Space ◽  
Near Earth Space

scholarly journals First measurements of low-energy cosmic rays on the surface of the lunar farside from Chang’E-4 mission

2022 ◽  
Vol 8 (2) ◽  
Author(s):  
Pengwei Luo ◽  
Xiaoping Zhang ◽  
Shuai Fu ◽  
Yong Li ◽  
Cunhui Li ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Low Energy ◽  
Earth Space ◽  
Near Earth Space ◽  
Lunar Farside

The intensity of low-energy cosmic rays on the lunar farside is consistent with that observed in the near-earth space.

Beacon-satellite observations of wave disturbances in the plasma of near-earth space

2004 ◽  
Vol 10 (2-3) ◽  
pp. 16-21
Author(s):  
O.F. Tyrnov ◽  
◽  
Yu.P. Fedorenko ◽  
L.F. Chernogor ◽  
◽  
...  
Keyword(s):  
Satellite Observations ◽  
Earth Space ◽  
Near Earth Space ◽  
Wave Disturbances

scholarly journals Dynamical evolution of Oort cloud comets to near-Earth space

2006 ◽  
Vol 2 (S236) ◽  
pp. 43-54 ◽  
Author(s):  
Olga A. Mazeeva
Keyword(s):  
Dynamical Evolution ◽  
Absolute Magnitude ◽  
Oort Cloud ◽  
Outer Solar System ◽  
Earth Space ◽  
Near Earth Space ◽  
Long Period ◽  
Order Of Magnitude ◽  
Orbital Periods ◽  
Stellar Perturbations

AbstractThe dynamical evolution of 2⋅105 hypothetical Oort cloud comets by the action of planetary, galactic and stellar perturbations during 2⋅109 years is studied numerically. The evolution of comet orbits from the outer (104 AU <a<5⋅104 AU, a is semimajor axes) and the inner Oort cloud (5⋅103 AU <a<104 AU) to near-Earth space is investigated separately. The distribution of the perihelion (q) passage frequency in the planetary region is obtained calculating the numbers of comets in every interval of Δ q per year. The flux of long-period (LP) comets (orbital periods P>200 yr) with perihelion distances q<1.5 AU brighter than visual absolute magnitude H10=7 is ∼ 1.5 comets per year, and ∼18 comets with H10<10.9. The ratio of all LP comets with q<1.5 AU to ‘new’ comets is ∼5. The frequency of passages of LP comets from the inner Oort cloud through region q<1.5 AU is ∼3.5⋅10−13 yr−1, that is roughly one order of magnitude less than frequency of passages of LP comets from the outer cloud (∼5.28⋅10−12 yr−1). We show that the flux of ‘new’ comets with 15<q<31 AU is higher than with q<15 AU, by a factor ∼1.7 for comets from the outer Oort cloud and, by a factor ∼7 for comets from the inner cloud. The perihelia of comets from the outer cloud previously passed through the planetary region are predominated in the Saturn-Uranus region. The majority of inner cloud comets come in the outer solar system (q>15 AU), and a small fraction (∼0.01) of them can reach orbits with q<1.5 AU. The frequency of transfer of comets from the inner cloud (a<104 AU) to the outer Oort cloud (a>104 AU), from where they are injected to the region q<1.5 AU, is ∼6⋅10−14 yr−1.

An instrument for discrimination between orbital debris and natural particles in near-Earth space

1993 ◽  
Vol 13 (8) ◽  
pp. 133-136 ◽  
Author(s):  
A.J. Tuzzolino ◽  
J.A. Simpson ◽  
R.B. McKibben ◽  
H.D. Voss ◽  
H. Gursky
Keyword(s):  
Orbital Debris ◽  
Earth Space ◽  
Near Earth Space
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