First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole [PDF]
, 2019 When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event horizon.
The Event Horizon Telescope Collaboration
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Synthetic aperture radio telescopes [PDF]
IEEE Signal Processing Magazine, 2010 Next-generation radio telescopes will be much larger, more sensitive, have a much larger observation bandwidth, and will be capable of pointing multiple beams simultaneously. Obtaining the sensitivity, resolution, and dynamic range supported by the receivers requires the development of new signal processing techniques for array and atmospheric ...
Ronny Levanda, Amir Leshem
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The Most Sensitive SETI Observations Toward Barnard's Star with FAST
The Astronomical Journal, 2023 Search for extraterrestrial intelligence (SETI) has been mainly focused on nearby stars and their planets in recent years. Barnard’s star is the second closest star system to the Sun and the closest star in the Five-hundred-meter Aperture Spherical radio
Zhen-Zhao Tao +6 more
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Millimetric Sardinia radio Telescope Receiver based on Array of Lumped elements kids [PDF]
EPJ Web of Conferences, 2022 MISTRAL is a millimetric camera working in the W-band (78–103 GHz) which will take data from the Sardinia Radio Telescope, the Italian 64-m radio telescope located 50 km form Cagliari, at 600m above the sea level, in Sardinia.
D’Alessandro G. +27 more
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Dwingeloo – the golden radio telescope [PDF]
Astronomische Nachrichten, 2007 AbstractThe Dwingeloo 25‐m telesope, inaugurated in 1956, has played a major role in research for half a century. We trace its history back to its conception in 1944, and summarize its main achievements. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
van Woerden, H., Strom, R. G.
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Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
STUDIES OF PULSAR RADIO EMISSION WITH THE GURT RADIO TELESCOPE SUBARRAY [PDF]
Radio Physics and Radio Astronomy, 2018 Purpose: Finding the possibility of pulsar radio emission studies in the meter wavelength range with a small-sized subarray of the low-frequency GURT radio telescope of new generation. Development of the joint pulsar radio emission observations technique
V. V. Zakharenko +6 more
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Effect of Parasitic Element on 408 MHz Antenna for Radio Astronomy Application
International Journal of Antennas and Propagation, 2014 Antenna is one of the important subsystem components in a radio telescope system. In this paper, analysis on the effect of parasitic element on 408 MHz antenna in a radio telescope system is presented.
Radial Anwar +5 more
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MULTIPLE CORRELATION MODELS OF DEPENDENCE OF RADIANT FLUXES OF COSMIC RADIO SOURCES ON EXTREME CONDITIONS OF SPACE WEATHER AT DECAMETER WAVES [PDF]
Radio Physics and Radio Astronomy, 2018 Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the condition of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources.
L. I. Sobitniak
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Radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources [PDF]
Physical Review D, 2018 We study the conditions for the adiabatic resonant conversion of the cold dark matter (CDM) axions into photons in the astrophysically sourced strong magnetic fields such as those in the neutron star magnetosphere. We demonstrate the possibility that the
F. Huang +3 more
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