scholarly journals Wave-optical study of the Einstein cross formed by a quadrupole gravitational lens

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Slava G. Turyshev ◽  
Viktor T. Toth
Keyword(s):  
Gravitational Lens ◽  
Optical Study

Seti Space Missions

1997 ◽  
Vol 161 ◽  
pp. 761-776 ◽  
Author(s):  
Claudio Maccone
Keyword(s):  
Electromagnetic Waves ◽  
Space Missions ◽  
Gravitational Lens ◽  
The Sun ◽  
Space Antenna ◽  
Focal Distance ◽  
Large Space ◽  
The Earth ◽  
Space Antennas ◽  
New Space

AbstractSETI from space is currently envisaged in three ways: i) by large space antennas orbiting the Earth that could be used for both VLBI and SETI (VSOP and RadioAstron missions), ii) by a radiotelescope inside the Saha far side Moon crater and an Earth-link antenna on the Mare Smythii near side plain. Such SETIMOON mission would require no astronaut work since a Tether, deployed in Moon orbit until the two antennas landed softly, would also be the cable connecting them. Alternatively, a data relay satellite orbiting the Earth-Moon Lagrangian pointL2would avoid the Earthlink antenna, iii) by a large space antenna put at the foci of the Sun gravitational lens: 1) for electromagnetic waves, the minimal focal distance is 550 Astronomical Units (AU) or 14 times beyond Pluto. One could use the huge radio magnifications of sources aligned to the Sun and spacecraft; 2) for gravitational waves and neutrinos, the focus lies between 22.45 and 29.59 AU (Uranus and Neptune orbits), with a flight time of less than 30 years. Two new space missions, of SETI interest if ET’s use neutrinos for communications, are proposed.

Electron Optical Study of Surface Morphologies of Crystals

1980 ◽  
Vol 38 ◽  
pp. 376-377
Author(s):  
Sumio Iijima ◽  
Tung Hsu
Keyword(s):  
Thin Film ◽  
Optical Study ◽  
Regular Array ◽  
Surface Steps ◽  
Diffracted Waves ◽  
Image Position ◽  
Surface Morphologies

Suppose the thickness of a thin film of a crystal varies periodically like a regular array of surface steps, kinematical intensities of diffracted waves from this crystal are modulated by a shape transform,

A Spectroscopic Study of the Environments of Gravitational Lens Galaxies

2006 ◽  
Vol 20 ◽  
pp. 289-290
Author(s):  
I. Momcheva ◽  
K. Williams ◽  
C. Keeton ◽  
A. Zabludoff
Keyword(s):  
Spectroscopic Study ◽  
Gravitational Lens ◽  
Lens Galaxies

Simulation of a gravitational lens in a lecture demonstration

1982 ◽  
Vol 138 (9) ◽  
pp. 147 ◽  
Author(s):  
G.S. Egorov ◽  
Nikolai S. Stepanov
Keyword(s):  
Gravitational Lens ◽  
Lecture Demonstration

Electron optical study of modulated mineral solid solutions

1981 ◽  
Vol 104 (2) ◽  
pp. 231-235 ◽  
Author(s):  
James Desmond Caldwell McConnell
Keyword(s):  
Solid Solutions ◽  
Optical Study

Optical Study of Anisotropy in Organic Conductors D4[MBr4](Solvent)

2020 ◽  
Vol 94 (5) ◽  
pp. 990-995
Author(s):  
E. I. Zhilyaeva ◽  
N. V. Drichko ◽  
G. V. Shilov ◽  
A. M. Flakina ◽  
S. A. Torunova ◽  
...  
Keyword(s):  
Organic Conductors ◽  
Optical Study

Optical study of ZnO nanorods grown via vapour solid growth method for energy harvesting applications

2020 ◽  
Author(s):  
Vandana Nagal ◽  
Mohammad Salman Khan ◽  
Virendra Kumar ◽  
Navjyoti Boora ◽  
Zishan H. Khan ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Zno Nanorods ◽  
Optical Study ◽  
Growth Method

Structural and optical study of glutathione-capped Ag–In–S nanocrystals

2021 ◽  
Vol 717 (1) ◽  
pp. 98-108
Author(s):  
B.V. Lopushanska ◽  
Y. M. Azhniuk ◽  
D. Solonenko ◽  
V. V. Lopushansky ◽  
I.P. Studenyak ◽  
...  
Keyword(s):  
Optical Study
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