Results 41 to 50 of about 10,502,106 (355)

The Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Quasar Survey: The Fourth and Fifth Data Releases [PDF]

open access: yesAstrophysical Journal Supplement Series, 2018
We present Data Releases 4 and 5 of the quasar catalog from the quasar survey by the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST), which includes quasars observed between 2015 September and 2017 June.
S. Yao   +17 more
semanticscholar   +1 more source

Age-dating luminous red galaxies observed with the Southern African Large Telescope [PDF]

open access: yes, 2016
We measure a value for the cosmic expansion of $H(z) = 89 \pm 23$(stat) $\pm$ 44(syst) km s$^{-1}$ Mpc$^{-1}$ at a redshift of $z \simeq 0.47$ based on the differential age technique.
A. Ratsimbazafy   +13 more
semanticscholar   +1 more source

Fermi Large Area Telescope Observations of Misaligned AGN [PDF]

open access: yes, 2010
Analysis is presented on 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar AGNs, including 7 FRI radio galaxies and 4 FRII radio sources consisting of 2 FRII radio galaxies and 2 steep ...
A. A. Abdo   +218 more
core   +4 more sources

In-Situ Metrology of Large Segmented Detector Based on Modified Optical Truss

open access: yesIEEE Photonics Journal, 2023
To precisely map cosmic structures and capture time-domain events, future large survey telescopes will be equipped with segmented detectors that greatly expand their field of view. Segment flatness and assembly accuracy will be essential for them to make
Qichang An   +6 more
doaj   +1 more source

The Prospects of Observing Tidal Disruption Events with the Large Synoptic Survey Telescope [PDF]

open access: yesAstrophysical Journal, 2019
The upcoming Large Synoptic Survey Telescope (LSST) will observe 18,000 deg2 of the southern sky and is expected to discover thousands of transients every night due to its large coverage area and its observing strategy.
Katja Bricman, A. Gomboc
semanticscholar   +1 more source

Miniature Patch and Slot Microstrip Arrays for IoT and ISM Band Applications

open access: yesIEEE Access, 2020
In this paper we present the design and fabrication of a two-antenna array to resonate at 5.8 GHz, a frequency that satisfies a host of applications, especially those associated with the ISM band, but including IoT applications.
Karen N. Olan-Nunez   +2 more
doaj   +1 more source

Large Binocular Telescope observations of PSR J2043+2740 [PDF]

open access: yes, 2017
We present the results of deep optical imaging of the radio/$\gamma$-ray pulsar PSR J2043+2740, obtained with the Large Binocular Telescope (LBT). With a characteristic age of 1.2 Myr, PSR J2043+2740 is one of the oldest (non recycled) pulsars detected ...
Breeveld, A. A.   +7 more
core   +3 more sources

A Thousand Earths: A Very Large Aperture, Ultralight Space Telescope Array for Atmospheric Biosignature Surveys [PDF]

open access: yesAstronomical Journal, 2019
An outstanding, multidisciplinary goal of modern science is the study of the diversity of potentially Earth-like planets and the search for life in them.
D. Apai   +6 more
semanticscholar   +1 more source

Inflatable On-Axis and Off-Axis Space Telescope Designs [PDF]

open access: yesEPJ Web of Conferences
In the realm of astronomical scientific exploration, deployable and scalable approaches in space telescope systems are reshaping our understanding of the universe.
Kim Daewook   +4 more
doaj   +1 more source

The Role of the Large Millimeter Telescope in Black Hole Science with the Next-Generation Event Horizon Telescope

open access: yesGalaxies, 2022
The landmark black hole images recently taken by the Event Horizon Telescope (EHT) have allowed the detailed study of the immediate surroundings of supermassive black holes (SMBHs) via direct imaging. These tantalizing early results motivate an expansion
Sandra Bustamante   +4 more
doaj   +1 more source

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