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102 papers · 1 filter

astro-ph.IM2026

Development, Configuration and Performance Characterization of a Scalable BETA ASIC-Based Readout System for Multi-Channel SiPM Detectors

Giulio Lucchetta, Keerthana Rajan Lathika, Benjamin Nobre Hauptmann +17

We present the design, configuration, and performance characterization of a scalable readout system based on the BETA application-specific integrated circuit (ASIC), developed to m…

astro-ph.IM2026

Flux Cube Reconstruction from Slitless Spectroscopy

M. Griggio, R. E. Ryan, N. Pirzkal +19

Slitless spectroscopy enables efficient, large-area surveys without target pre-selection, yet it faces challenges from source blending, higher noise, and lost spatial-spectral info…

astro-ph.IM2026

Euclid Quick Data Release (Q1). AstroVink: A vision transformer approach to find strong gravitational lens systems

Euclid Collaboration, S. H. Vincken, K. Rojas +302

We present AstroVink, a vision transformer classifier designed for automated identification of strong lens candidates in Euclid imaging. We build upon the DINOv2 encoder, fine tune…

astro-ph.IM2026

Simulations of a 2 x 1.5D coded aperture camera for X-ray astronomy

J. J. M. in 't Zand, L. Kuiper, F. Ceraudo +3

The concept of two perpendicular one-dimensional coded aperture cameras, necessitated by the imaging capability of the detector, finds its application in the design of the Wide Fie…

astro-ph.IM2026

Gaia Data Release 4: Modelling of drift-scan related effects in Gaia's point spread function

Nicholas Rowell, Michael Davidson, Nigel C. Hambly +5

An accurate model of the point spread function is required in order to estimate positions and brightnesses of stars in digitized images. The PSF of the Gaia space telescope is unus…

astro-ph.IM2026

Euclid: An automated system to match Rubin transient alerts to Euclid observations

C. Duffy, I. M. Hook, C. M. Gutierrez +150

The Vera C. Rubin observatory is expected to produce 10 million transient alerts per night in ugrizy filters, whilst Euclid is a visible to near-infrared space telescope engaged in…

astro-ph.IM2026

Antenna for the detection of electromagnetic audio-band disturbances on-board LISA

D. Serrano, A. Pérez-Ortega, D. Roma-Dollase +4

The LISA mission will be the first observatory to detect gravitational waves from space within the millihertz frequency band. Magnetic forces have an important impact on the instru…

astro-ph.IM2026

Euclid. Properties and performance of the NISP signal estimator

Euclid Collaboration, F. Cogato, B. Kubik +292

The Euclid spacecraft, located at the second Lagrangian point of the Sun-Earth system, hosts the Near-Infrared Spectrometer and Photometer (NISP) instrument. NISP is equipped with…

astro-ph.IM2026

ESO Expanding Horizon White Paper: Revealing the properties of matter at supranuclear densities with gravitational waves

Tim Dietrich, Tanja Hinderer, Micaela Oertel +40

Understanding dense matter under extreme conditions is one of the most fundamental puzzles in modern physics. Complex interactions give rise to emergent, collective phenomena. Whil…

astro-ph.IM2025

The Future of Evolved Planetary Systems

Roberto Raddi, Anna F. Pala, Alberto Rebassa-Mansergas +19

Understanding the formation, evolution, and chemical diversity of exoplanets are now central areas of astrophysics research. White dwarfs provide a uniquely sensitive laboratory fo…

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

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★ 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

Performance of the image persistence model for Euclid infrared detectors

B. Kubik, R. Barbier, G. Smadja +99

Large-format infrared detectors are at the heart of major ground and space-based astronomical instruments, and the HgCdTe HxRG is the most widely used. The Near Infrared Spectromet…

astro-ph.IM2025

Identifying Anomalous DESI Galaxy Spectra with a Variational Autoencoder

C. Nicolaou, R. P. Nathan, O. Lahav +43

The tens of millions of spectra being captured by the Dark Energy Spectroscopic Instrument (DESI) provide tremendous discovery potential. In this work we show how Machine Learning,…

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

Bayesian Component Separation for DESI LAE Automated Spectroscopic Redshifts and Photometric Targeting

Ana Sofía M. Uzsoy, Andrew K. Saydjari, Arjun Dey +37

Lyman Alpha Emitters (LAEs) are valuable high-redshift cosmological probes traditionally identified using specialized narrow-band photometric surveys. In ground-based spectroscopy,…

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

From particles to precision. Simulating subsonic turbulence with Smoothed Particle Hydrodynamics

Rubén M. Cabezón, Domingo García-Senz, Oliver Avril +6

The numerical simulation of subsonic turbulence with smoothed particle hydrodynamics (SPH) has traditionally been hampered by zeroth-order (E0) errors, inaccurate gradient evaluati…

astro-ph.IM2025★ 106 cited

The NewAthena mission concept in the context of the next decade of X-ray astronomy

Mike Cruise, Matteo Guainazzi, James Aird +16

Large X-ray observatories such as Chandra and XMM-Newton have been delivering scientific breakthroughs in research fields as diverse as our Solar System, the astrophysics of stars,…

astro-ph.IM2024★ 4 cited

The Wide Field Monitor (WFM) of the China-Europe eXTP (enhanced X-ray Timing and Polarimetry) mission

Margarita Hernanz, Marco Feroci, Yuri Evangelista +58

The eXTP mission is a major project of the Chinese Academy of Sciences (CAS), with a large involvement of Europe. Its scientific payload includes four instruments: SFA, PFA, LAD an…

astro-ph.IM2024

Tilt-to-length coupling in LISA Pathfinder: long-term stability

M Armano, H Audley, J Baird +75

The tilt-to-length coupling during the LISA Pathfinder mission has been numerically and analytically modeled for particular timespans. In this work, we investigate the long-term st…

astro-ph.IM2024★ 12 cited

Precision measurements of the magnetic parameters of LISA Pathfinder test masses

M Armano, H Audley, J Baird +76

A precise characterization of the magnetic properties of LISA Pathfinder free falling test-masses is of special interest for future gravitational wave observatory in space. Magneti…