Results 71 to 80 of about 279,129 (320)

Software Architecture and System Design of Rubin Observatory [PDF]

open access: yesarXiv, 2022
Starting from a description of the Rubin Observatory Data Management System Architecture, and drawing on our experience with and involvement in a range of other projects including Gaia, SDSS, UKIRT, and JCMT, we derive a series of generic design patterns and lessons learned.
arxiv  

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber   +3 more
wiley   +1 more source

Censored Planet: An Internet-wide, Longitudinal Censorship Observatory

open access: yesConference on Computer and Communications Security, 2020
Remote censorship measurement techniques offer capabilities for monitoring Internet reachability around the world. However, operating these techniques continuously is labor-intensive and requires specialized knowledge and synchronization, leading to ...
R. Raman   +3 more
semanticscholar   +1 more source

Gaia Search for Stellar Companions of TESS Objects of Interest V

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT In this paper, we present the latest results of our ongoing multiplicity survey of (Community) TESS Objects of Interest, using astrometry and photometry from the latest data release of the ESA Gaia mission to detect stellar companions of these stars and to characterize their properties.
Markus Mugrauer   +3 more
wiley   +1 more source

Astronomical Observing Conditions at Xinglong Observatory from 2007 to 2014 [PDF]

open access: yes, 2016
Xinglong Observatory of the National Astronomical Observatories, Chinese Academy of Sciences (NAOC), is one of the major optical observatories in China, which hosts nine optical telescopes including the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and the 2.16 m reflector.
arxiv   +1 more source

The Pierre Auger Observatory [PDF]

open access: yesAIP Conf.Proc.698:366-369,2004, 2003
One of the most fascinating puzzles in particle astrophysics today is that of the origin and nature of the highest energy cosmic rays. The Pierre Auger Observatory (PAO), currently under construction in Province of Mendoza, Argentina, and with another site planned in the Northern hemisphere, is a major international effort to make precise, high ...
arxiv   +1 more source

Science Case for a Wide Field-of-View Very-High-Energy Gamma-ray Observatory in the Southern Hemisphere [PDF]

open access: yes, 2019
We outline the science motivation for SGSO, the Southern Gamma-Ray Survey Observatory. SGSO will be a next-generation wide field-of-view gamma-ray survey instrument, sensitive to gamma-rays in the energy range from 100 GeV to hundreds of TeV. Its science
Andreas Albert, J. P. Harding
semanticscholar   +1 more source

Creating a database of biobased hydrogen production: country‐based evaluations and comparative analysis

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Hydrogen is increasingly recognized as a crucial element in a sustainable future, providing a variety of solutions to address the climate crisis. Its importance is emphasized by its adaptability, high energy content, and capacity to decarbonize a number of industries, including steel production, the chemical sector (e.g., ammonia and methanol ...
Mine Güngörmüşler   +2 more
wiley   +1 more source

« Crise du lait » et trajectoires de résilience des petits producteurs à Madagascar

open access: yesRevue Internationale des Études du Développement, 2018
In Madagascar, the dairy production intended for marketing has developed over the past few decades within small diversified family farming on high plateaus.
Isabelle Droy, Patrick Rasolofo
doaj  

Observatories [PDF]

open access: yesarXiv, 1999
I give a brief history of astronomical observatories as an institution. This includes: 1) observatories in Islam; 2) China and India; 3) early European observatories; 4) the rise of national observatories; 5) private (amateur) observatories; 6) mountaintop observatories and the modern era.
arxiv  

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