output
19922026
Showing astro-ph.IMShow all

225 papers · 1 filter

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

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

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.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

Towards the Giant Radio Array for Neutrino Detection (GRAND): the GRANDProto300 and GRAND@Auger prototypes

GRAND Collaboration, Jaime Álvarez-Muniz, Rafael Alves Batista +118

The Giant Radio Array for Neutrino Detection (GRAND) is a proposed multi-messenger observatory of Ultra-High-Energy (UHE) particles of cosmic origin. Its main goal is to find the l…

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

First release of LiteBIRD simulations from an end-to-end pipeline

M. Bortolami, N. Raffuzzi, L. Pagano +107

The LiteBIRD satellite mission aims at detecting Cosmic Microwave Background modes with unprecedented precision, targeting a total error on the tensor-to-scalar ratio of $δ…

astro-ph.IM2025

A Simulation Framework for the LiteBIRD Instruments

M. Tomasi, L. Pagano, A. Anand +111

LiteBIRD, the Lite (Light) satellite for the study of -mode polarization and Inflation from cosmic background Radiation Detection, is a space mission focused on primordial cosmo…

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★ 2 cited

Observational strategies for ultrahigh-energy neutrinos: the importance of deep sensitivity for detection and astronomy

Kumiko Kotera, Mainak Mukhopadhyay, Rafael Alves Batista +5

Detecting ultrahigh-energy neutrinos can take two complementary approaches with different trade-offs. 1)~Wide and shallow: aim for the largest effective volume, and to be cost-effe…

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

Euclid Quick Data Release (Q1): VIS processing and data products

Euclid Collaboration, H. J. McCracken, K. Benson +377

This paper describes the VIS Processing Function (VIS PF) of the Euclid ground segment pipeline, which processes and calibrates raw data from the VIS camera. We present the algorit…

astro-ph.IM2025★ 1 cited

The Giant Radio Array for Neutrino Detection (GRAND) and its prototype phases

Marion Guelfand

Multi-messenger astronomy is key today to broaden our understanding of the high energy Universe. When an ultra-high energy (UHE) particle interacts in the atmosphere or underground…

astro-ph.IM2025★ 7 cited

PyPLUTO: a data analysis Python package for the PLUTO code

Giancarlo Mattia, Daniele Crocco, David Melon Fuksman +5

In recent years, numerical simulations have become indispensable for addressing complex astrophysical problems. The MagnetoHydroDynamics (MHD) framework represents a key tool for i…

astro-ph.IM2024★ 2 cited

Pointing Accuracy Improvements for the South Pole Telescope with Machine Learning

P. M. Chichura, A. Rahlin, A. J. Anderson +93

We present improvements to the pointing accuracy of the South Pole Telescope (SPT) using machine learning. The ability of the SPT to point accurately at the sky is limited by its s…

astro-ph.IM2024★ 2 cited

Detection of Thermal Emission at Millimeter Wavelengths from Low-Earth Orbit Satellites

A. Foster, A. Chokshi, A. J. Anderson +88

The detection of artificial satellite thermal emission at millimeter wavelengths is presented using data from the 3rd-Generation receiver on the South Pole Telescope (SPT-3G). This…

astro-ph.IM2024

What trade-off for astronomy between greenhouse gas emissions and the societal benefits? A sociological approach

P. Hennebelle, M. Barsuglia, F. Billebaud +6

The threat posed to humanity by global warming has led scientists to question the nature of their activities and the need to reduce the greenhouse gas emissions from research. Unti…

astro-ph.IM2024

Development of an Autonomous Detection-Unit Self-Trigger for GRAND

Pablo Correa, Jean-Marc Colley, Tim Huege +5

One of the major challenges for the radio detection of extensive air showers, as encountered by the Giant Radio Array for Neutrino Detection (GRAND), is the requirement of an auton…

astro-ph.IM2024★ 5 cited

COmoving Computer Acceleration (COCA): -body simulations in an emulated frame of reference

Deaglan J. Bartlett, Marco Chiarenza, Ludvig Doeser +1

-body simulations are computationally expensive, so machine-learning (ML)-based emulation techniques have emerged as a way to increase their speed. Although fast, surrogate mode…

astro-ph.IM2024

Modelling the Radio Emission of Inclined Air Showers in the 50-200 MHz Frequency Band for GRAND

Lukas Gülzow, Tim Huege, Kumiko Kotera +3

The Giant Radio Array for Neutrino Detection (GRAND) is a distributed, sparse ground antenna array designed to detect the radio emission from highly inclined extensive air showers…

astro-ph.IM2024★ 1 cited

Challenges in focal plane and telescope calibration for High-Precision Space Astrometry

F. Malbet, M. Lizzana, F. Pancher +10

With sub-microarcsecond angular accuracy, the \theia telescope will be capable of revealing the architectures of nearby exoplanetary systems down to the mass of Earth. This researc…

astro-ph.IM2024★ 3 cited

Analytical planar wavefront reconstruction and error estimates for radio detection of extensive air showers

Arsène Ferrière, Simon Prunet, Aurélien Benoit-Lévy +3

When performing radio detection of ultra-high energy astroparticles, the planar wavefront model is often used as a first step to evaluate the arrival direction of primary particles…