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The Extreme Ultraviolet wavelength range was one of the final windows to be opened up to astronomy. Nevertheless, it provides very important diagnostic tools for a range of astronomical objects, although the opacity of the interstellar…

Solar and Stellar Astrophysics · Physics 2015-06-17 M. A. Barstow , S. L. Casewell , J. B. Holberg , M. P. Kowalski

Several space missions are proposed or planned for the coming two decades dedicated or including mid- to high-resolution spectropolarimetry on a wide UV band. This includes the European instrument Pollux for the NASA HWO flagship mission,…

Instrumentation and Methods for Astrophysics · Physics 2025-03-10 Coralie Neiner , Adrien Girardot , Jean-Michel Reess

Selection of extreme objects in the data from large-scale sky surveys is a powerful tool for the detection of new classes of astrophysical objects or rare stages of their evolution. The cross-matching of catalogues and analysis of the color…

Solar and Stellar Astrophysics · Physics 2021-05-04 Sergey Karpov , Oleg Malkov , Gang Zhao

This is the first of a series of papers presenting the THROES (A caTalogue of HeRschel Observations of Evolved Stars) project, intended to provide a comprehensive overview of the spectroscopic results obtained in the far-infrared (55-670…

Solar and Stellar Astrophysics · Physics 2018-04-04 J. Ramos-Medina , C. Sánchez Contreras , P. García-Lario , C. Rodrigo , J. da Silva Santos , E. Solano

The JEM-EUSO program is focused on observations of Ultra High Energy Cosmic Rays (UHECRs) from space. For this purpose, a series of detectors based on multi-anode photomultiplier tubes with a time resolution of the order of $\mu$s have been…

Instrumentation and Methods for Astrophysics · Physics 2023-09-19 Zbigniew Plebaniak , Marika Przybylak

The Circumgalactic H$\alpha$ Spectrograph (CH$\alpha$S) is a ground-based optical integral field spectrograph designed to detect ultra-faint extended emission from diffuse ionized gas in the nearby universe. CH$\alpha$S is particularly well…

The time-variable electromagnetic sky has been well-explored at a wide range of wavelengths. Numerous high-energy space missions take advantage of the dark Gamma-ray and X-ray sky and utilize very wide field detectors to provide almost…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 I. Sagiv , A. Gal-Yam , E. O. Ofek , E. Waxman , O. Aharonson , E. Nakar , D. Maoz , B. Trakhtenbrot , S. R. Kulkarni , E. S. Phinney , J. Topaz , C. Beichman , J. Murthy , S. P. Worden

We present accretion-disk structure measurements from UV-optical reverberation mapping observations of a sample of eight quasars at 0.24<z<0.85. Ultraviolet photometry comes from two cycles of Hubble Space Telescope monitoring, accompanied…

Mini-EUSO is the first mission of the JEM-EUSO program on board the International Space Station. It was launched in August 2019 and it is operating since October 2019 being located in the Russian section (Zvezda module) of the station and…

Instrumentation and Methods for Astrophysics · Physics 2023-08-29 M. Bertaina , M. Battisti , M. Bianciotto , K. Bolmgren , F. Fenu

The present paper describes the current baseline optical design of POLLUX, a high-resolution spectropolarimeter for the future LUVOIR mission. The instrument will operate in the ultraviolet (UV) domain from 90 to 390 nm in both…

High-fidelity spectroscopy presents challenges for both observations and in designing instruments. High-resolution and high-accuracy spectra are required for verifying hydrodynamic stellar atmospheres and for resolving intergalactic…

Instrumentation and Methods for Astrophysics · Physics 2015-05-18 Dainis Dravins

This article presents a detailed overview and assessment of contact-free UV light discharge systems (UVDS) needed to control the variable electric charge level of free-flying test masses which are part of high precision inertial sensors in…

Instrumentation and Detectors · Physics 2012-07-04 Tobias Ziegler , Patrick Bergner , Gerald Hechenblaikner , Nico Brandt , Walter Fichter

At present, the ground-based astronomy of very high energy (VHE) (E>100 GeV) gamma-rays experiences the challenging transition phase caused by the substantial upgrading of its observational instrumentation. Recently the HEGRA collaboration…

Astrophysics · Physics 2008-11-26 Alexander K Konopelko

We present a technique-led review of the progression of precise radio astrometry, from the first demonstrations, half a century ago, until to date and into the future. We cover the developments that have been fundamental to allow high…

Instrumentation and Methods for Astrophysics · Physics 2020-10-06 María Rioja , Richard Dodson

A step towards a successful implementation of timeresolved digital in-line holography with extreme ultraviolet radiation is presented. Ultrashort XUV pulses are produced as high-order harmonics of a femtosecond laser and a Schwarzschild…

A prototype cross-dispersed optical echelle spectrograph of very high resolution has been designed and built at Steward Observatory and tested at the Starfire Optical Range (SOR) 1.5 m telescope. It is the first spectrograph to take…

Astrophysics · Physics 2009-11-07 Jian Ge , J. R. P. Angel , B. Jacobsen , N. Woolf , R. Q. Fugate , J. H. Black

An overview is given of the Permanent All Sky Survey (PASS) project. The primary goal of PASS is the detection of all transiting giant planets in the entire sky, complete for stellar systems of magnitudes ~ 5.5-10.5. Since the sample stars…

We describe the design, performance and scientific objectives of the NASA-funded ALICE instrument aboard the ESA Rosetta asteroid flyby/comet rendezvous mission. ALICE is a lightweight, low-power, and low-cost imaging spectrograph optimized…

Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational-wave events involving spectacular black-hole mergers, indicate that the low-metallicity Universe is fundamentally different from our…