output
19922026
Showing 2020 · astro-ph.IMShow all

50 papers · 2 filters

astro-ph.IM2020★ 3 cited

Towards a physical understanding of the thermal background in large ground-based telescopes

Leonard Burtscher, Ioannis Politopoulos, Sergio Fernández-Acosta +11

Ground-based thermal-infrared observations have a unique scientific potential, but are also extremely challenging due to the need to accurately subtract the high thermal background…

astro-ph.IM2020★ 1 cited

FIRST, a Pupil-Remapping Fiber Interferometer at the Subaru Telescope: on-sky results

Sébastien Vievard, Elsa Huby, Sylvestre Lacour +13

FIRST, the Fibered Imager foR a Single Telescope, is a spectro-imager using single-mode fibers for pupil remapping, allowing measurements beyond the telescope diffraction limit. In…

astro-ph.IM2020

Socio-demographic study of the exoplanet direct imaging community

Lucie Leboulleux, Élodie Choquet, Elsa Huby +2

Astronomy and science are fields in which specific groups remain under-represented despite multiple studies that investigate this issue and propose solutions. In this article, we a…

astro-ph.IM2020★ 11 cited

Design, pointing control, and on-sky performance of the mid-infrared vortex coronagraph for the VLT/NEAR experiment

A. -L. Maire, E. Huby, O. Absil +16

Vortex coronagraphs have been shown to be a promising avenue for high-contrast imaging in the close-in environment of stars at thermal infrared (IR) wavelengths. They are included…

astro-ph.IM2020★ 1.2k cited

Gaia Early Data Release 3: The astrometric solution

L. Lindegren, S. A. Klioner, J. Hernández +94

Gaia Early Data Release 3 (Gaia EDR3) contains results for 1.812 billion sources in the magnitude range G = 3 to 21 based on observations collected by the European Space Agency Gai…

astro-ph.IM2020★ 8 cited

Calibration of the underground muon detector of the Pierre Auger Observatory

The Pierre Auger Collaboration, A. Aab, P. Abreu +370

To obtain direct measurements of the muon content of extensive air showers with energy above eV, the Pierre Auger Observatory is currently being equipped with an underg…

astro-ph.IM2020★ 17 cited

The POEMMA (Probe of Extreme Multi-Messenger Astrophysics) Observatory

A. V. Olinto, J. Krizmanic, J. H. Adams +73

The Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) is designed to accurately observe ultra-high-energy cosmic rays (UHECRs) and cosmic neutrinos from space with sensitivity…

astro-ph.IM2020★ 11 cited

A high-performance and portable asymptotic preserving radiation hydrodynamics code with the M1 model

H. Bloch, P. Tremblin, M. González +2

Aims. We present a new radiation hydrodynamics code, called "ARK-RT" which uses a two-moment model with the M1 closure relation for radiative transfer. This code aims at being read…

astro-ph.IM2020★ 49 cited

The quantum efficiency and diffractive image artifacts of Si:As IBC mid-IR detector arrays at 5 10 m: Implications for the JWST/MIRI detectors

Andras Gaspar, George H. Rieke, Pierre Guillard +6

Arsenic doped back illuminated blocked impurity band (BIBIB) silicon detectors have advanced near and mid-IR astronomy for over thirty years; they have high quantum efficiency (QE)…

astro-ph.IM2020★ 3 cited

Origin of the in-orbit instrumental background of the Hard X-ray Imager onboard Hitomi

Kouichi Hagino, Hirokazu Odaka, Goro Sato +43

Understanding and reducing the in-orbit instrumental backgrounds are essential to achieving high sensitivity in hard X-ray astronomical observations. The observational data of the…

astro-ph.IM2020★ 18 cited

Multi-CCD Point Spread Function Modelling

T. Liaudat, J. Bonnin, J. -L. Starck +4

Galaxy imaging surveys observe a vast number of objects that are affected by the instrument's Point Spread Function (PSF). Weak lensing missions, in particular, aim at measuring th…

astro-ph.IM2020

Extreme Universe Space Observatory on a Super Pressure Balloon 1 calibration: from the laboratory to the desert

J. H. Adams, L. Allen, R. Bachman +63

The Extreme Universe Space Observatory on a Super Pressure Balloon 1 (EUSO-SPB1) instrument was launched out of Wanaka, New Zealand, by NASA in April, 2017 as a mission of opportun…

astro-ph.IM2020★ 248 cited

The LOFAR Two Meter Sky Survey: Deep Fields, I -- Direction-dependent calibration and imaging

C. Tasse, T. Shimwell, M. J. Hardcastle +29

The Low Frequency Array (LOFAR) is an ideal instrument to conduct deep extragalactic surveys. It has a large field of view and is sensitive to large scale and compact emission. It…

astro-ph.IM2020★ 13 cited

Increasing the achievable contrast of infrared interferometry with an error correlation model

Jens Kammerer, Antoine Mérand, Michael J. Ireland +1

Interferometric observables are strongly correlated, yet it is common practice to ignore these correlations in the data analysis process. We develop an empirical model for the corr…

astro-ph.IM2020★ 21 cited

Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory

The Pierre Auger Collaboration, A. Aab, P. Abreu +357

AMIGA (Auger Muons and Infill for the Ground Array) is an upgrade of the Pierre Auger Observatory to complement the study of ultra-high-energy cosmic rays (UHECR) by measuring the…

astro-ph.IM2020★ 45 cited

QUBIC I: Overview and ScienceProgram

J. -Ch. Hamilton, L. Mousset, E. S. Battistelli +127

The Q U Bolometric Interferometer for Cosmology (QUBIC) is a novel kind of polarimeter optimized for the measurement of the B-mode polarization of the Cosmic Microwave Backgro…

astro-ph.IM2020★ 26 cited

MIRISim: A Simulator for the Mid-Infrared Instrument on JWST

P. D. Klaassen, V. C. Geers, S. M. Beard +18

The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST), has imaging, four coronagraphs and both low and medium resolution spectroscopic modes . Being able to s…

astro-ph.IM2020★ 10 cited

Onboard catalogue of known X-ray sources for SVOM/ECLAIRs

N. Dagoneau, S. Schanne, J. Rodriguez +2

The SVOM mission under development will carry various instruments, and in particular the coded-mask telescope ECLAIRs, with a large field of view of about 2 sr, operating in the 4-…

astro-ph.IM2020★ 6 cited

High contrast at small separation -- II. Impact on the dark hole of a realistic optical set-up with two deformable mirrors

M. Beaulieu, P. Martinez, L. Abe +3

Future large space- or ground-based telescopes will offer the resolution and sensitivity to probe the habitable zone of a large sample of nearby stars for exo-Earth imaging. To thi…

astro-ph.IM2020★ 69 cited

Mini-EUSO mission to study Earth UV emissions on board the ISS

S. Bacholle, P. Barrillon, M. Battisti +57

Mini-EUSO is a telescope observing the Earth in the ultraviolet band from the International Space Station. It is a part of the JEM-EUSO program, paving the way to future larger mis…

astro-ph.IM2020★ 16 cited

QUBIC II: Spectro-Polarimetry with Bolometric Interferometry

L. Mousset, M. M. Gamboa Lerena, E. S. Battistelli +128

Bolometric interferometry is a novel technique that has the ability to perform spectral imaging. A bolometric interferometer observes the sky in a wide frequency band and can recon…

astro-ph.IM2020★ 85 cited

The LSST DESC DC2 Simulated Sky Survey

LSST Dark Energy Science Collaboration, Bela Abolfathi, David Alonso +77

We describe the simulated sky survey underlying the second data challenge (DC2) carried out in preparation for analysis of the Vera C. Rubin Observatory Legacy Survey of Space and…

astro-ph.IM2020★ 1 cited

Fast algorithms to approximate the position-dependent point spread function responses in radio interferometric wide-field imaging

M. Atemkeng, O. Smirnov, C. Tasse +2

The desire for wide-field of view, large fractional bandwidth, high sensitivity, high spectral and temporal resolution has driven radio interferometry to the point of big data revo…

astro-ph.IM2020★ 25 cited

Pulsars with NenuFAR: backend and pipelines

L. Bondonneau, J. -M. Grießmeier, G. Theureau +27

NenuFAR (New extension in Nançay upgrading LoFAR) is a new radio telescope developed and built on the site of the Nançay Radio Observatory. It is designed to observe the largely un…