Results 21 to 30 of about 155,102 (310)

Disturbance of plasma environment in the vicinity of the Astrid-2 microsatellite [PDF]

open access: yesAnnales Geophysicae, 2001
The presence of a satellite disturbs the ambient plasma. The charging of the spacecraft creates a sheath around it, and the motion of the satellite creates a wake disturbance. This modification of the plasma environment introduces difficulties in
N. Ivchenko   +5 more
doaj   +1 more source

Developing Firmware for Space Weather Probes 2 Using HDL Coder

open access: yes, 2023
GPS and wireless communications are affected by interference from the ionosphere. Space weather affects plasma in the ionosphere, causing communication disruptions and reliability issues.
Wallace, Nicholas L.
core   +1 more source

BLACK HOLE PROBES OF AUTOMORPHIC SPACE [PDF]

open access: yesInternational Journal of Modern Physics D, 2012
Over the past few years the arithmetic Langlands program has proven useful in addressing physical problems. In this paper it is shown how Langlands' reciprocity conjecture for automorphic forms, in combination with a representation theoretic notion of motives, suggests a framework in which the entropy of automorphic black holes can be viewed as a ...
openaire   +4 more sources

Enhanced Radiation Levels at Aviation Altitudes and Their Relationship to Plasma Waves in the Inner Magnetosphere

open access: yesSpace Weather, 2023
It is believed that galactic cosmic rays and solar energetic particles are the two major sources of ionizing radiation. However, the radiation source may also be due to relativistic electrons that are associated with precipitation from the Van Allen ...
Homayon Aryan   +4 more
doaj   +1 more source

Consistent probe spacing in multi-probe STM experiments [PDF]

open access: yesAIP Advances, 2020
Multi-probe scanning tunneling microscopy can play a role in various electrical measurements and characterization of nanoscale objects. The consistent close placement of multiple probes relies on very sharp apexes with no other interfering materials along the shank of the tip.
Onoda, Jo   +4 more
openaire   +3 more sources

Multilayers for directed energy accelerated lightsails

open access: yesCommunications Materials, 2022
Lightsails accelerated by ground-based laser arrays are a candidate technology to send probes into deep space in a timeframe compatible with human life.
Giovanni Santi   +7 more
doaj   +1 more source

A Review of Semiconductor-Based Monolithic Optical Phased Array Architectures

open access: yesIEEE Open Journal of the Solid-State Circuits Society, 2021
Semiconductor-based monolithic optical phased arrays (OPA) enable optical beam-steering for lidar and 3D imaging, free-space optical communications, projection and 3D holographical displays, and neural probes among many other possible applications.
Hossein Hashemi
doaj   +1 more source

A Novel Integrated Structure with a Radial Displacement Sensor and a Permanent Magnet Biased Radial Magnetic Bearing

open access: yesSensors, 2014
In this paper, a novel integrated structure is proposed in order to reduce the axial length of the high speed of a magnetically suspended motor (HSMSM) to ensure the maximum speed, which combines radial displacement sensor probes and the permanent magnet
Jinji Sun, Yin Zhang
doaj   +1 more source

Probing the space of toric quiver theories [PDF]

open access: yesJournal of High Energy Physics, 2010
We demonstrate a practical and efficient method for generating toric Calabi-Yau quiver theories, applicable to both D3 and M2 brane world-volume physics. A new analytic method is presented at low order parametres and an algorithm for the general case is developed which has polynomial complexity in the number of edges in the quiver. Using this algorithm,
Hewlett, J., He, Y.
openaire   +4 more sources

Program for Development of Rockets and Space Probes [PDF]

open access: yesفناوری در مهندسی هوافضا, 2018
At the beginning of the 12th century, numerous attempts were made to build rockets; however, serious scientific activities began in the late nineteenth and early twentieth centuries.
Ahmadreza Aliakbari
doaj  

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