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Temperature effect of muons registered under the ground in Yakutsk by telescopes on GAS-discharge counters

Solar-Terrestrial Physics, 2023
The Yakutsk spectrograph of cosmic rays includes a complex of muon telescopes based on gas-discharge and scintillation counters located on the surface and under the ground at depths of 7, 20, and 40 m.w.e.
Yanchukovsky V. L.
doaj +1 more source

The James Webb Space Telescope Mission: Optical Telescope Element Design, Development, and Performance [PDF]

Publications of the Astronomical Society of the Pacific, 2023
The James Webb Space Telescope (JWST) is a large, infrared space telescope that has recently started its science program which will enable breakthroughs in astrophysics and planetary science.
M. McElwain +128 more
semanticscholar +1 more source

First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole [PDF]

Astrophysical Journal Letters, 2022
We present the first event-horizon-scale images and spatiotemporal analysis of Sgr A* taken with the Event Horizon Telescope in 2017 April at a wavelength of 1.3 mm.
Event Horizon Telescope Collaboration +270 more
semanticscholar +1 more source

First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass [PDF]

Astrophysical Journal Letters, 2022
In this paper we quantify the temporal variability and image morphology of the horizon-scale emission from Sgr A*, as observed by the EHT in 2017 April at a wavelength of 1.3 mm. We find that the Sgr A* data exhibit variability that exceeds what can be
Event Horizon Telescope Collaboration +269 more
semanticscholar +1 more source

Energy Spectra of Atmospheric Turbulence for Calculating $C_{n}^{2}$ Parameter. I. Maidanak and Suffa Observatories in Uzbekistan

Atmosphere, 2021
Knowledge of the turbulence spectra is of interest for describing atmospheric conditions as applied to astronomical observations. This article discusses the deformations of the turbulence spectra with heights in a wide range of scales at the sites of the
Artem Yu. Shikhovtsev +5 more
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First M87 Event Horizon Telescope Results. VII. Polarization of the Ring [PDF]

Astrophysical Journal Letters, 2021
In 2017 April, the Event Horizon Telescope (EHT) observed the near-horizon region around the supermassive black hole at the core of the M87 galaxy. These 1.3 mm wavelength observations revealed a compact asymmetric ring-like source morphology.
K. Akiyama +238 more
semanticscholar +1 more source

Estimation of Astronomical Seeing with Neural Networks at the Maidanak Observatory

Atmosphere, 2023
In the present article, we study the possibilities of machine learning for the estimation of seeing at the Maidanak Astronomical Observatory (38∘40′24″ N, 66∘53′47″ E) using only Era-5 reanalysis data.
Artem Y. Shikhovtsev +6 more
doaj +1 more source

The Planck Telescope [PDF]

AIP Conference Proceedings, 2002
In this paper we present an overview of the Telescope designed for ESA's mission dedicated to map the Cosmic Microwave Background Anisotropies and Polarization. Two instruments, LFI and HFI, operate in an overall frequency range between 25 and 900 GHz and share the focal region of the 1.5 meter optimized telescope.
F. Villa +9 more
openaire +3 more sources

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
semanticscholar +1 more source

James Webb Space Telescope

Resonance, 2022
The James Webb Space Telescope, or JWST, or simply Webb, is a large, space-based observatory, designed primarily to conduct infrared astronomy. The telescope is named after James Edwin Webb (1906–1992), who was the second administrator of NASA during ...
A. Sharma
semanticscholar +1 more source

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