Results 21 to 30 of about 2,951,289 (298)
Beyond CCDs: characterization of sCMOS detectors for optical astronomy [PDF]
Astronomical Telescopes + InstrumentationModern scientific complementary metal-oxide semiconductor (sCMOS) detectors provide a highly competitive alternative to charge-coupled devices (CCDs), the latter of which have historically been dominant in optical imaging.
Aditya Khandelwal +9 more
semanticscholar +1 more source
An Attempt to Construct an Activity Cycle Catalog with Kepler Long-Cadence Light Curves
Universe, 2022 Many stars show activity cycles like the Sun. Kepler has gathered ∼200,000 light curves. Most of the Kepler stars only have long-cadence light curves, which limits their applicable methods.
Yu-Fu Shen, Gang Zhao, Sarah A. Bird
doaj +1 more source
Application of multicore optical fibers in astronomy [PDF]
Optical Fiber Communications Conference and Exhibition, 2017 Multicore fibers are gaining growing attention in astronomy. The two main attributes which make them attractive for astronomy are that they reduce the distance between cores and hence have a superior fill factor to other approaches and they offer the ...
N. Jovanovic +3 more
semanticscholar +1 more source
Optical interferometry in astronomy [PDF]
Reports on Progress in Physics, 2003 Here I review the current state of the field of optical stellar interferometry, concentrating on ground-based work although a brief report of space interferometry missions is included. We pause both to reflect on decades of immense progress in the field as well as to prepare for a new generation of large interferometers just now being commissioned ...
openaire +3 more sources
A two-way photonic quantum entanglement transfer interface
npj Quantum Information, 2022 A quantum interface for two-way entanglement transfer, e.g., between orbital angular momentum degree of freedom in free space and time-energy degree of freedom in optical fibers, provides a way toward establishing entanglement between remote ...
Yiwen Huang +5 more
doaj +1 more source
Optical Communication in Space: Challenges and Mitigation Techniques [PDF]
IEEE Communications Surveys and Tutorials, 2017 In recent years, free space optical (FSO) communication has gained significant importance owing to its unique features: large bandwidth, license free spectrum, high data rate, easy and quick deployability, less power, and low mass requirements.
H. Kaushal, Georges Kaddoum
semanticscholar +1 more source
Galaxies, 2017 A critical observation for testing the KRM jet model, in development at FIU, is to observe high time resolution, high accuracy photometry and polarimetry over a wide range of frequencies in the optically thin portion of the synchrotron spectrum.
James R. Webb +4 more
doaj +1 more source
A fully-connected three-user quantum hyperentangled network
Quantum Frontiers, 2023 Exploiting the fantastic features of quantum mechanics, a hyperentangled quantum network encoded in multiple degree of freedoms (DOF), e.g., polarization and orbital angular momentum DOFs, can encode more qubits per transmitted photon and offers a ...
Yiwen Huang +5 more
doaj +1 more source
A 15-user quantum secure direct communication network
Light: Science & Applications, 2021 A 15-user quantum secure direct communication (QSDC) network is experimentally demonstrated, and any two users can perform QSDC task over 40 kilometers of optical fiber.
Zhantong Qi +5 more
doaj +1 more source
Geophysical Research Letters, 2023 The generation of kinetic‐scale flux ropes (KSFRs) is closely related to magnetic reconnection. Both flux ropes and reconnection sites are detected in the magnetosheath and can impact the dynamics upstream of the magnetopause.
Y. C. Xiao +11 more
doaj +1 more source