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Extreme Ultraviolet Astronomy

open access: yesAnnual Review of Astronomy and Astrophysics, 2000
▪ Abstract  Astronomical studies in the extreme ultraviolet (EUV) band of the spectrum were dismissed during the early years of space astronomy as impossible, primarily because of the mistaken view that radiation in this band would be absorbed by the interstellar medium.
Stéphane Vennes
exaly   +3 more sources

GlobULeS. IV. UVIT/AstroSat Detection of Extremely Low Mass White Dwarf Companions to Blue Straggler Stars in NGC 362

open access: yesThe Astrophysical Journal, 2023
We report the discovery of extremely low mass white dwarfs (ELM WDs) as a companion of blue straggler stars (BSSs) in the Galactic globular cluster NGC 362 using images from AstroSat's Ultra Violet Imaging Telescope (UVIT). Spectral energy distributions (
Arvind K. Dattatrey   +6 more
doaj   +1 more source

UVIT Observations of the Small Magellanic Cloud: Point-source Catalog

open access: yesThe Astrophysical Journal, 2023
Three fields in the outskirts of the Small Magellanic Cloud were observed by the UltraViolet Imaging Telescope (UVIT) on board AstroSat, between 2017 December 31 and 2018 January 1.
A. Devaraj   +4 more
doaj   +1 more source

Neil Gehrels–Swift Observatory’s Ultraviolet/Optical Telescope Observations of Small Bodies in the Solar System

open access: yesUniverse, 2023
The Neil–Gehrels Swift Observatory has added extensively to our understanding of small bodies in our solar system through its capabilities to rapidly respond to short-live events such as outbursts and collisions, through its near-ultraviolet coverage ...
Dennis Bodewits   +3 more
doaj   +1 more source

A Swift Response to Newly Discovered, Nearby Transients

open access: yesUniverse, 2023
The Neil Gehrels Swift Observatory has proven to be an extraordinary supernova (SN) observatory. The clearest application of Swift’s unique strengths is obtaining very early UV and X-ray data of young SNe, which enables robust constraints on their ...
Peter J. Brown   +5 more
doaj   +1 more source

Ultraviolet Astronomy [PDF]

open access: yesHighlights of Astronomy, 1968
Ultraviolet astronomy is in a phase of very rapid development and any review of the new techniques involved is necessarily conditioned by the fact that most of the work is in a preparatory stage. This paper, therefore, will not be restricted to a discussion of those techniques which have undergone the ultimate test of their effectiveness, i.e., an ...
openaire   +1 more source

Is Life an Unavoidable Consequence of the Formation of the Universe? Investigating the Formation of Bio-Precursors and the Signature of Earth-Like Living Forms

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution to the Research Topic “Imagining the Future of Astronomy and Space Sciences” focuses on astrobiology and exoplanetary research. Understanding the origin of life is the main scientific challenge to this century and an interdisciplinary ...
Ana I. Gomez de Castro
doaj   +1 more source

Prospects of Gravitational-wave Follow-up through a Wide-field Ultraviolet Satellite: A Dorado Case Study

open access: yesThe Astrophysical Journal, 2023
The detection of gravitational waves from the binary neuron star merger GW170817 and electromagnetic counterparts GRB170817A and AT2017gfo kick-started the field of gravitational-wave multimessenger astronomy. The optically red to near-infrared emission (
Bas Dorsman   +10 more
doaj   +1 more source

Far and Extreme Ultraviolet Astronomy with ORFEUS [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
AbstractORFEUS (Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer) is a 1 m normal incidence telescope for spectroscopic investigations of cosmic sources in the far and extreme ultraviolet spectral range. The instrument will be integrated into the freeflyer platform ASTRO-SPAS.
G. Krämer   +14 more
openaire   +1 more source

Nonequilibrium Ionization Modeling of Petschek-type Shocks in Reconnecting Current Sheets in Solar Eruptions

open access: yesThe Astrophysical Journal, 2023
Nonequilibrium ionization (NEI) is essentially required for astrophysical plasma diagnostics once the plasma status departs from the assumption of ionization equilibrium.
Chengcai Shen   +2 more
doaj   +1 more source

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