Results 81 to 90 of about 134,290 (279)

New Arabic Records From Cairo on Supernovae 1181 and 1006

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer   +3 more
wiley   +1 more source

Status and perspectives of the radio detection of highenergy cosmic rays [PDF]

open access: yesEPJ Web of Conferences, 2019
Status and perspectives of the radio detection of high-energy cosmic rays are discussed with emphasis on recent developments at the LOFAR radio telescope and the Pierre Auger Observatory.
Hörandel Jörg R.
doaj   +1 more source

On the origin of 140 GHz emission from the 4 July 2012 solar flare [PDF]

open access: yes, 2016
The sub-THz event observed on the 4 July 2012 with the Bauman Moscow State Technical University Radio Telescope RT-7.5 at 93 and 140~GHz as well as Kislovodsk and Mets\"ahovi radio telescopes, Radio Solar Telescope Network (RSTN), GOES, RHESSI, and SDO ...
Akabane   +39 more
core   +2 more sources

Mechanistic Understanding of Laser‐Induced Defect Engineering of Anisotropic Cobalt Oxide Spinel Platelets in Water

open access: yesChemCatChem, EarlyView.
Pulsed laser defect engineering in liquid (PUDEL) modifies anisotropic Co3O4 platelets by inducing lattice distortions and defects while enriching {111} surfaces with hydroxyl groups and tunes the catalytic activity of the Co3O4 platelets in electrocatalytic oxygen evolution and thermocatalytic selective oxidation reactions.
Dana Schellenburg   +22 more
wiley   +1 more source

Radio galaxies with the Cherenkov Telescope Array [PDF]

open access: yesAstroparticle Physics, 2017
Misaligned AGN (MAGNs), i.e., radio-loud AGNs with the jet not pointing directly towards us, represent a new class of GeV emitters revealed by the Fermi space telescope. Although they comprise only a small fraction of the high-energy sources, MAGNs are extremely interesting objects offering a different perspective to study high-energy processes with ...
Jürgen Knödlseder   +5 more
openaire   +3 more sources

Unlocking Biomolecule Modification with Light‐Promoted Photocatalyst‐Free Approaches: Current Tools, Challenges, and Perspectives

open access: yesChemistryEurope, EarlyView.
This Perspective focuses on photocatalyst‐free, photoinduced modifications of biomolecules, emphasizing transformations mediated by electron donor–acceptor complexes. Mechanistic aspects, current limitations, and future opportunities are discussed, providing insight into the field of bioconjugation.
Milene Hornink   +3 more
wiley   +1 more source

Automating Synthetic Organic Electrochemistry: Concepts and Advancements

open access: yesChemistry–Methods, EarlyView.
A tutorial review on how to build an automated electrochemical flow platform, including the most relevant progresses and the future directions of the field, is studied. Automated electrochemical platforms are attracting attention for their potential in streamlining reaction preparation, electrolysis, and analysis to generate large datasets in a fast ...
Eduardo Rial‐Rodríguez   +2 more
wiley   +1 more source

An Observation Scheduling System for Radio Telescope Array

open access: yesApplied Sciences
The 4 × 4.5 m radio telescope array at Guizhou Normal University is an astronomical observation facility in operation, mainly aiming at the scientific detection of pulsars and fast radio bursts.
Chi Ma   +5 more
doaj   +1 more source

RADIO TELESCOPE URAN-4 AND THE PROBLEM OF RADIO INTERFERENCE

open access: yesOdessa Astronomical Publications, 2018
The URAN-4 decameter radio telescope, which is located in thevillageofMayakiof theOdessaregion, is an element of system of the URAN radio telescopes (Ukrainian Radiointerferometer of theAcademyofSciences).
V. V. Galanin   +3 more
doaj   +1 more source

Detecting cosmic rays with the LOFAR radio telescope [PDF]

open access: yesAstronomy & Astrophysics, 2013
The low frequency array (LOFAR), is the first radio telescope designed with the capability to measure radio emission from cosmic-ray induced air showers in parallel with interferometric observations. In the first $\sim 2\,\mathrm{years}$ of observing, 405 cosmic-ray events in the energy range of $10^{16} - 10^{18}\,\mathrm{eV}$ have been detected in ...
Sarod Yatawatta   +106 more
openaire   +8 more sources

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