output
19932026
most citedGaia Data Release 2. Summary of the contents and survey properties

8.6k citations

Showing 2025 · astro-ph.IMShow all

29 papers · 2 filters

astro-ph.IM2025

Lossless compression of simulated radio interferometric visibilities

A. R. Offringa, R. J. van Weeren

Context. Processing radio interferometric data often requires storing forward-predicted model data. In direction-dependent calibration, these data may have a volume an order of mag…

astro-ph.IM2025

Why the Northern Hemisphere Needs a 30-40 m Telescope and the Science at Stake: Resolved Stellar Populations Studies in M31 and its Satellites

C. Gallart, E. Fernández-Alvar, A. B. A. Queiroz +48

A 30 m class optical/near-IR telescope in the Northern Hemisphere, equipped for diffraction-limited imaging and high-resolution, multi-object spectroscopy of faint stars, would ena…

astro-ph.IM2025

The Emergence of Prebiotic Chemistry in the ISM

Izaskun Jimenez-Serra, Giuliana Cosentino, Francisco Montenegro-Montes +22

Contrary to popular belief, the interstellar medium (ISM) is not empty; it is filled with atoms, dust particles, and molecules. Some of these molecules may have been the very build…

astro-ph.IM2025★ 1 cited

The impact of lunar topography on the 21-cm power spectrum for grid-based arrays : Insights for the Dark-ages EXplorer (DEX)

S. Ghosh, L. V. E. Koopmans, C. Brinkerink +17

The Dark Ages (DA) provides a crucial window into the physics of the infant Universe, with the 21-cm signal offering the only direct probe for mapping out the three-dimensional dis…

astro-ph.IM2025

Euclid Quick Data Release (Q1). From simulations to sky: Advancing machine-learning lens detection with real Euclid data

Euclid Collaboration, N. E. P. Lines, T. E. Collett +301

In the era of large-scale surveys like Euclid, machine learning has become an essential tool for identifying rare yet scientifically valuable objects, such as strong gravitational…

astro-ph.IM2025

Towards ALMA2040: An update from the European community and invitation to contribute

Stefano Facchini, Jacqueline Hodge, Jes Jørgensen +27

Over the last 15 years, the Atacama Large Millimeter/submillimeter Array (ALMA) has revolutionized astrophysics by providing unprecedented resolution and sensitivity in observing t…

astro-ph.IM2025

Euclid Structural-Thermal-Optical Performance

Euclid Collaboration, A. Anselmi, R. Laureijs +290

The Euclid system performance is defined in terms of image quality metrics tuned to the weak gravitational lensing (WL) cosmological probe. WL induces stringent requirements on the…

astro-ph.IM2025

A socio-demographic study of the exoplanet direct imaging community II

Lucie Leboulleux, Niyati Desai, Daniel Echeverri +9

Recognizing and addressing under-representation, exclusion, and problematic behavior within astronomy and astrophysics is crucial. In 2019, a survey was conducted at the Spirit of…

astro-ph.IM2025

Why every solar eclipse viewing event needs a disco ball

Valerie A. Rapson, Alex Pietrow, Robert J. Cumming +12

Solar eclipses offer unparalleled opportunities for public engagement in astronomy. Large groups of people often gather to view eclipses, and these events require affordable and ea…

astro-ph.IM2025

SETI Post-Detection Protocols: Progress Towards a New Version

Michael A. Garrett, Kathryn Denning, Leslie I. Tennen +1

The International Academy of Astronautics (IAA) SETI Committee has long provided guiding principles for responding to a potential detection of a SETI signal. The foundational Decla…

astro-ph.IM2025★ 2 cited

Ukrainian Wartime Astronomy and its Prospects

Danilo Albergaria, Kateryna Frantseva, Pedro Russo +20

The Russian invasion of Ukraine damaged or compromised astronomical facilities and has prompted the displacement of researchers. A plan to restore Ukrainian astronomy, rooted in a…

astro-ph.IM2025

Blink and you'll miss it -- How Technological Acceleration Shrinks SETI's Narrow Detection Window

Michael Garrett

The search for extraterrestrial intelligence (SETI) has historically focused on detecting electromagnetic technosignatures, implicitly assuming that alien civilisations are biologi…

astro-ph.IM2025★ 2 cited

Communicating astrobiology and the search for life elsewhere: speculations and promises of a developing scientific field in newspapers, press releases and papers

Danilo Albergaria, Pedro Russo, Ionica Smeets +2

This study examines the communication of astrobiology and the Search for Life Elsewhere (SLE) in academic papers, press releases, and news articles over three decades. Through a qu…

astro-ph.IM2025★ 1 cited

Adding colour to the Zernike wavefront sensor: Advantages of including multi-wavelength measurements for wavefront reconstruction

M. Darcis, S. Y. Haffert, V. Chambouleyron +3

To directly image Earth-like planets, contrast levels of 10^-8 - 10^-10 are required. The next generation of instruments will need wavefront control below the nanometer level to ac…

astro-ph.IM2025★ 22 cited

SOAP: A Python Package for Calculating the Properties of Galaxies and Halos Formed in Cosmological Simulations

Robert McGibbon, John C. Helly, Joop Schaye +2

Modern large scale cosmological hydrodynamic simulations require robust tools capable of analysing their data outputs in a parallel and efficient manner. We introduce SOAP (Spheric…

astro-ph.IM2025★ 2 cited

Euclid preparation. Overview of Euclid infrared detector performance from ground tests

Euclid Collaboration, B. Kubik, R. Barbier +341

The paper describes the objectives, design and findings of the pre-launch ground characterisation campaigns of the Euclid infrared detectors. The pixel properties, including baseli…

astro-ph.IM2025★ 2 cited

Euclid VI. NISP-P optical ghosts

Euclid Collaboration, K. Paterson, M. Schirmer +309

The Near-Infrared Spectrometer and Photometer (NISP) onboard Euclid includes several optical elements in its path, which introduce artefacts into the data from non-nominal light pa…

astro-ph.IM2025★ 8 cited

High-Contrast Coronagraphy

Matthew A. Kenworthy, Sebastiaan Y. Haffert

Imaging terrestrial exoplanets around nearby stars is a formidable technical challenge, requiring the development of coronagraphs to suppress the stellar halo of diffracted light a…

astro-ph.IM2025

Euclid preparation: The NISP spectroscopy channel, on ground performance and calibration

Euclid Collaboration, W. Gillard, T. Maciaszek +356

ESA's Euclid cosmology mission relies on the very sensitive and accurately calibrated spectroscopy channel of the Near-Infrared Spectrometer and Photometer (NISP). With three opera…

astro-ph.IM2025★ 1 cited

End-to-end design framework for compressed on-chip pixel-wise spectro-polarimeters

T. A. Stockmans, F. Snik, J. M. Smit +4

Modern detector manufacturing allows spectral and polarimetric filters to be directly integrated on top of separate detector pixels. This enables the creation of CubeSat-sized spec…

astro-ph.IM2025

Extended Linearity in the High-Order Wavefront Sensor for the Roman Coronagraph

Iva Laginja, Pierre Baudoz, Johan Mazoyer +3

Context. The Coronagraphic Instrument (CGI) on the Roman Space Telescope aims for unprecedented contrast for direct imaging of exoplanets, serving as a critical tech demo for futur…

astro-ph.IM2025★ 6 cited

Extended source fringe flats for the JWST MIRI Medium Resolution Spectrometer

N. Crouzet, M. Mueller, B. Sargent +17

The detectors of the JWST Mid-Infrared Instrument (MIRI) Medium Resolution Spectrometer (MRS) form low-finesse resonating cavities that cause periodic count rate modulations (fring…

astro-ph.IM2025★ 8 cited

Euclid Quick Data Release (Q1): From spectrograms to spectra: the SIR spectroscopic Processing Function

Euclid Collaboration, Y. Copin, M. Fumana +348

The Euclid space mission aims to investigate the nature of dark energy and dark matter by mapping the large-scale structure of the Universe. A key component of Euclid's observation…

astro-ph.IM2025

The Gaia Astrometric Catalogue and Secular Aberration Drift in Proper Motions

Anthony G. A. Brown, Ulrich Bastian, Sergei Klioner

A recent paper demonstrated the existence of a secular aberration drift term in stellar proper motions that arises when transforming an astrometric catalogue defined for an observe…