Results 31 to 40 of about 665,255 (368)
The Atacama Cosmology Telescope: DR4 maps and cosmological parameters [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We present new arcminute-resolution maps of the Cosmic Microwave Background temperature and polarization anisotropy from the Atacama Cosmology Telescope, using data taken from 2013–2016 at 98 and 150 GHz. The maps cover more than 17,000 deg2, the deepest
S. Aiola +139 more
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Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant [PDF]
, 1998 We present here the final results of the Hubble Space Telescope (HST) Key Project to measure the Hubble constant. We summarize our method, the results, and the uncertainties, tabulate our revised distances, and give the implications of these results for ...
W. Freedman +14 more
semanticscholar +1 more source
The eROSITA X-ray telescope on SRG [PDF]
Astronomy & Astrophysics, 2020 eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the primary instrument on the Spectrum-Roentgen-Gamma (SRG) mission, which was successfully launched on July 13, 2019, from the Baikonour cosmodrome.
P. Predehl +92 more
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Receiving vectors of muon telescope of cosmic ray station Novosibirsk
Solar-Terrestrial Physics, 2016 The method of receiving vectors allows us to determine cosmic ray anisotropy at every moment of time. Also, the method makes it possible to study fast anisotropy fluctuations related to the interplanetary medium dynamics.
Yanchukovsky V.L. +4 more
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Imagining the Heavens: Adam Elsheimer’s Flight into Egypt and the Renaissance Night Sky
Journal for the History of Knowledge, 2021 Adam Elsheimer’s The Flight into Egypt (1609) has triggered a longstanding debate among art historians. For the last five decades, Elsheimer’s novel naturalistic representation of the night sky in his painting on copper has been linked to Galileo’s ...
Stefan Zieme
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First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole [PDF]
Astrophysical Journal, 2019 We present the first Event Horizon Telescope (EHT) images of M87, using observations from April 2017 at 1.3 mm wavelength. These images show a prominent ring with a diameter of ~40 μas, consistent with the size and shape of the lensed photon orbit ...
K. Akiyama +214 more
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Building a CCD Spectrograph for Educational or Amateur Astronomy [PDF]
, 2002 We discuss the design of an inexpensive, high-throughput CCD spectrograph for a small telescope. By using optical fibers to carry the light from the telescope focus to a table-top spectrograph, one can minimize the weight carried by the telescope and ...
Charles B. Hughes +4 more
core +1 more source
PLoS ONE, 2014 Next generation sequencing technologies led to the discovery of numerous new microbe species in diverse environmental samples. Some of the new species contain genes never encountered before. Some of these genes encode proteins with novel functions, and some of these genes encode proteins that perform some well-known function in a novel way.
Szalkai, Balázs +4 more
openaire +5 more sources
Wishing for the Watch Face in Jonathan Swift’s “The Progress of Beauty”
ABO : Interactive Journal for Women in the Arts 1640-1830, 2018 This article illuminates the technological underpinnings of Jonathan Swift’s satire, “The Progress of Beauty” (1719), by exploring how eighteenth-century poetics of beauty and scientific progress pit human against automaton.
Jantina Ellens
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Comparative analysis of three mode-selection methods for solid-state lasers [PDF]
E3S Web of Conferences, 2021 In the Nd3+:YAG pulsed Q-switched laser system, the selective output of several low order modes of TEM00, TEM01 and TEM11 is realized by adding a iris diaphragm, a telescope or a Gaussian mirror at an appropriate position in the resonator, and the three ...
Sun Yan
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