Results 51 to 60 of about 2,210,115 (287)
The Astrophysical Journal Letters, 2023 We study the optical flux and polarization variability of the binary black hole blazar OJ 287 using quasi-simultaneous observations from 2015 to 2023 carried out using telescopes in the USA, Japan, Russia, Crimea, and Bulgaria.
Alok C. Gupta +27 more
doaj +1 more source
Measurements of the Beam-Wave Fluctuations over a 142-km Atmospheric Path [PDF]
, 2006 An optical link has been established between the Canary Islands La Palma and Tenerife. A 1064-nm transmitting laser was located on La Palma whereas a BPSK communication receiver and measurement instruments were installed in ESA's OGS on Tenerife.
Perlot, Nicolas +11 more
core +1 more source
Impact flare in exosystems: optical manifestation
ASTRONOMY AT THE EPOCH OF MULTIMESSENGER STUDIES. Proceedings of the VAK-2021 conference, Aug 23–28, 2021, 2022 A general discrepancy of statistics observed for known population of exosystems (exoplanets, exocomets and exosateroids)is noted. The most populated exosystem objects (i.e. exoasteroids) demonstrate the most poorly optic/IR manifestation. Sofar, only 2 events observed in IR are interpreted as an exoasteroid manifestation.
openaire +1 more source
The Lupus Damage Index Revision Program: Results From the Item Generation and Reduction Phases
Arthritis Care &Research, EarlyView.Objective A data‐driven and expert/patient consensus‐based project to develop a revised Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology (ACR) Damage Index (SDI) is under way supported by SLICC, ACR, and the Lupus Foundation of America. Our objective is to report the item generation and reduction phase results
Burak Kundakci +25 more
wiley +1 more source
A Search for Minute-timescale Flares from the Transient AT 2024wpp
The Astrophysical JournalThe AT 2018cow-like fast blue optical transient AT 2022tsd showed a large number of a few-minute-duration, high-luminosity (∼10 ^43 erg s ^−1 ) flares. We present an intensive search for such flares from another 18cow-like event, AT 2024wpp. We have used
Eran O. Ofek +23 more
doaj +1 more source
Development of a Disease Activity Index for the Assessment of VEXAS Syndrome (VEXAS‐DAI)
Arthritis Care &Research, EarlyView.Objective Vacuoles, E1 enzyme, X‐linked, autoinflammatory, somatic syndrome (VEXAS) syndrome is characterized by a complex spectrum of inflammatory and hematologic manifestations. Clinical research to identify effective therapies is urgently needed but is hindered by the lack of validated outcome measures.
Kevin Byram +25 more
wiley +1 more source
The Astrophysical Journal LettersFlares produced following the tidal disruption of stars by supermassive black holes can reveal the properties of the otherwise dormant majority of black holes and the physics of accretion.
Lydia Makrygianni +39 more
doaj +1 more source
Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel [PDF]
, 2006 Mitigation of index of refraction turbulence (IRT) effects is crucial in long-range atmospheric communication links. Diversity-transmission is one favorable way for fading compensation.
Perlot, Nicolas +7 more
core +1 more source
Advanced Functional Materials, EarlyView.Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley +1 more source
Multiple Wavelength Free-Space Laser Communications [PDF]
, 2003 Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas +9 more
core +1 more source