Results 51 to 60 of about 919,357 (232)
Ångström Small Radio Telescope
, 2011 For the Swedish Institute of Space Physics and Uppsala University, we have developed a working radio astronomy telescope capable of receiving the 21cm hydrogen line; the Ångström Small Radio Telescope.
Lindén, Henrik
core +2 more sources
A Candidate Period of 4.605 Days for FRB 20121102A and One Possible Implication of Its Origin
The Astrophysical JournalA firm establishment of the presence or the lack of periodicity in repeating fast radio bursts is crucial for determining their origins. Here, we compile 1145 radio bursts of FRB 20121102A with fluence larger than 0.15 Jy ms from observations using the ...
Jixuan Li, Yang Gao, Di Li, Kinwah Wu
doaj +1 more source
The new era of large paraboloid antennas: the life of Prof. Dr. Otto Hachenberg [PDF]
Advances in Radio Science, 2003 Seldom does a scientist get an opportunity in his lifetime to build an instrument that remains unchallenged as the world’s no. 1 for 30 years. The Effelsberg 100- m radio telescope, constructed under the direction of Prof. Dr.
R. Wielebinski
doaj
Journal of Heterocyclic Chemistry, EarlyView.A robust method for synthesizing substituted oxadiazepines and related heterocycles via intramolecular SNAr is detailed. Under mild conditions, this methodology has been leveraged to afford products of varying electronic and aryl nature in up to 99% yields.
Matthew W. Reeves +4 more
wiley +1 more source
JEADV Clinical Practice, EarlyView.ABSTRACT Oculocutaneous albinism (OCA) is a genetic disorder found worldwide, but its impact is particularly pronounced in the African continent. This results from both a higher prevalence and the persistent myths and superstitions surrounding the condition in many African communities.
Rebecca Donadoni +3 more
wiley +1 more source
Radio telescope for monitoring the state of interplanetary plasma
Solar-Terrestrial PhysicsThis paper examines scientific and technical requirements for a specialized radio telescope which allows us to make a space weather forecast from observations of radio sources that scintillate on moving irregularities of interplanetary plasma.
Oreshko Vasiliy, Tyul'bashev Sergey
doaj +1 more source
Generating Helical Polymorphic Beams Using Dielectric Metasurfaces
Laser &Photonics Reviews, EarlyView.Helix‐shaped polymorphic beams are optical fields whose intensity maxima spiral around the propagation axis, enabling particle manipulation through attractive or repulsive forces. Traditionally requiring expensive spatial light modulators, metasurfaces now provide a compact, cost‐effective alternative. This work demonstrates general helical polymorphic
Maryam Setareh +3 more
wiley +1 more source
, 2018 In this talk, I will review the current status of the Sardinia Radio Telescope and the near-future technical developments. In particular, I will discuss the new generation receivers and focus on the spectroscopic capabilities of the telescope and on the ...
Leurini, Silvia (8229222) +1 more
core +1 more source
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119 [PDF]
, 2016 The Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes observed the BL Lac object H1722+119 (redshift unknown) for six consecutive nights between 2013 May 17 and 22, for a total of 12.5 h. The observations were triggered by high activity in
, MAGIC Collaboration +2 more
core +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Ultra‐high field (≥ 7 T) and 3 T MRI suffer from B1+ inhomogeneity and signal loss. Conventional metasurfaces that mitigate B1+ inhomogeneity and improve image SNR are “fixed” in nature and designed for a single Larmor frequency. This study demonstrates the feasibility of an adaptive metasurface utilizing voltage‐controlled capacitors ...
Paul S. Jacobs +7 more
wiley +1 more source