Results 101 to 110 of about 183,322 (313)

Pulsars identified in the LOFAR Two-metre Sky Survey at 144 MHz

Astronomy & Astrophysics
We present the astrometric identification of 80 known radio pulsars as unresolved continuum sources detected at 144 MHz in the second data release of the LOFAR Two-metre Sky Survey (LoTSS DR2), which covers 27% of the northern hemisphere.
Rijkers G. A. C., Bassa C. G., Callingham J. R., Shimwell T.   +3 more
doaj   +1 more source

Photoresponse Properties of Ambipolar Transport in WSe2 Field‐Effect Transistors

Advanced Electronic Materials, EarlyView.
This study explores the photoresponse of WSe2 ambipolar field‐effect transistors, which exhibit unipolar, saturation, and ambipolar transport regions. Light illumination induces a shift of critical voltage with enhanced photocurrent generation driven by the photogating effect without the material degradation seen in avalanche photodetectors. This study
Jongeun Yoo, Seongmin Ko, Sunggyu Ryoo, Jaehyoung Park, Jaeyoung Kim, Juntae Jang, Jinwoo Sim, Donguk Kim, SeungNam Cha, Chongwu Zhou, Kyungjune Cho, Takhee Lee   +11 more
wiley   +1 more source

Multiwavelength insights into the pulsar wind nebula candidate near 1LHAASO J0343+5254u: An obscured merging galaxy cluster?

Astronomy & Astrophysics
Context. The advent of the Large High Altitude Air Shower Observatory (LHAASO) accelerated the detection of tera- and petaelectronvolt gamma-ray sources.
Edler H. W., Arias M., Botteon A., Bassa C. G.   +3 more
doaj   +1 more source

Spatial modifications of three-dimensional elliptic Gaussian beam scattered by two-dimensional periodic array.

Advanced Electromagnetics, 2012
The diffraction problem of a three-dimensional elliptic p- polarized Gaussian beam on an aperture array of rectangular holes is solved. The new algorithm for the solution of three-dimensional scattering problems of linearly polarized wave beams on two ...
A. Gribovsky, O. Yeliseyev
doaj   +1 more source

Radio interference in the near-earth environment [PDF]

Natural and man-made radio frequency interference (RFI) are potentially serious obstacles to the successful operation of an array of spacecraft used for low frequency (1 to 30 MHz) radio interferometry in the near-earth environment.
Erickson, W. C.
core   +1 more source

Uranium Doped Gallium Nitride Epitaxial Thin Films

Advanced Electronic Materials, EarlyView.
Uranium was controllably added to gallium nitride using molecular beam epitaxy. The uranium atoms segregated into vertically oriented regions with higher doping levels. Concentrations up to a few percent were achieved without showing significant degradation in the crystalline quality or optical characteristics. Low electrical resistivity was maintained
J. Pierce Fix, Sabin Regmi, Aaron G. Penders, Sohail Shah, Kevin D. Vallejo, Volodymyr B. Buturlim, Belief Rifore, Krzysztof Gofryk, Mukesh Bachhav, Nicholas J. Borys, Brelon J. May   +10 more
wiley   +1 more source

Frequency-dependent time-delays for strong outbursts in selected blazars from the Metsähovi and the University of Michigan Radio Astronomy Observatory monitoring databases – I. [PDF]

, 2006
T. B. Pyatunina, N. A. Kudryavtseva, D. C. Gabuzda, S. G. Jorstad, M. F. Aller, H. D. Aller, H. Teräsranta   +6 more
openalex   +1 more source

Unveiling The Mysteries Of The Cosmos: An Overview Of Radio Astronomy And Its Profound Insights [PDF]

, 2023
Manjuleshwar Panda, Yogesh Chandra
openalex   +1 more source

Upper air physics, radio astronomy, and rocket spectroscopy Annual report [PDF]

Research in upper air physics, radio astronomy, and rocket ...
Friedman, H.
core   +1 more source

Exceptional Antimodes in Multi‐Drive Cavity Magnonics

Advanced Electronic Materials, EarlyView.
Driven‐dissipative cavity‐magnonics provides a flexible platform for engineering non‐Hermitian physics such as exceptional points. Here, using a four‐port, three‐mode system with controllable microwave interference, antimodes and coherent perfect extinction (CPE) are realized, enabling active tuning to antimode exceptional points.
Mawgan A. Smith, Ryan D. McKenzie, Alban Joseph, Robert L. Stamps, Rair Macêdo   +4 more
wiley   +1 more source