Search Publications
Wavefront error of PHI/HRT on Solar Orbiter at various heliocentric distances
Woch, J.; Solanki, S. K.; Schou, J. +31 more
Aims: We use wavefront sensing to characterise the image quality of the High Resolution Telescope (HRT) of the Polarimetric and Helioseismic Imager (SO/PHI) data products during the second remote sensing window of the Solar Orbiter (SO) nominal mission phase. Our ultimate aims are to reconstruct the HRT data by deconvolving with the HRT point…
Probing sub-galactic mass structure with the power spectrum of surface-brightness anomalies in high-resolution observations of galaxy-galaxy strong gravitational lenses - I. Power-spectrum measurement and feasibility study
Vegetti, S.; McKean, J. P.; Treu, T. +4 more
While the direct detection of the dark-matter particle remains very challenging, the nature of dark matter could be possibly constrained by comparing the observed abundance and properties of small-scale sub-galactic mass structures with predictions from the phenomenological dark-matter models, such as cold, warm, or hot dark matter. Galaxy-galaxy …
The Colorado Ultraviolet Transit Experiment Mission Overview
France, Kevin; Fleming, Brian; Hoadley, Keri +18 more
Atmospheric escape is a fundamental process that affects the structure, composition, and evolution of many planets. The signatures of escape are detectable on close-in, gaseous exoplanets orbiting bright stars, owing to the high levels of extreme-ultraviolet irradiation from their parent stars. The Colorado Ultraviolet Transit Experiment (CUTE) is…
The TEMPO Survey. I. Predicting Yields of Transiting Exosatellites, Moons, and Planets from a 30 days Survey of Orion with the Roman Space Telescope
Vanderburg, Andrew; Heller, René; Kounkel, Marina +12 more
We present design considerations for the Transiting Exosatellites, Moons, and Planets in Orion (TEMPO) Survey with the Nancy Grace Roman Space Telescope. This proposed 30 days survey is designed to detect a population of transiting extrasolar satellites, moons, and planets in the Orion Nebula Cluster (ONC). The young (1-3 Myr), densely populated O…
Supernova 2020wnt: An Atypical Superluminous Supernova with a Hidden Central Engine
Kilpatrick, Charles D.; Foley, Ryan J.; Jones, David O. +34 more
We present observations of a peculiar hydrogen- and helium-poor stripped-envelope (SE) supernova (SN) 2020wnt, primarily in the optical and near-infrared (near-IR). Its peak absolute bolometric magnitude of -20.9 mag (L bol, peak = (6.8 ± 0.3) × 1043 erg s-1) and a rise time of 69 days are reminiscent of hydrogen-p…
Simultaneous and panchromatic observations of the fast radio burst FRB 20180916B
Palazzi, E.; Frontera, F.; Orlandini, M. +47 more
Aims. Fast radio bursts are bright radio transients whose origins are not yet understood. The search for a multi-wavelength counterpart of those events can set a tight constraint on the emission mechanism and the progenitor source. Methods. We conducted a multi-wavelength observational campaign on FRB 20180916B between October 2020 and August 2021…
Analysing spectral lines in Gaia low-resolution spectra
Jordi, C.; Fabricius, C.; Carrasco, J. M. +1 more
Context. With its third data release, European Space Agency's Gaia mission has published the first set of low-resolution spectra for a large number of celestial objects. However, these spectra differ in their nature from typical spectroscopic data, as they do not consist of wavelength samples with associated flux values. Instead, they are represen…
Statistical Analysis of Interplanetary Shocks from Mercury to Jupiter
Janvier, Miho; Nieves-Chinchilla, Teresa; Démoulin, Pascal +3 more
In situ observations of interplanetary (IP) coronal mass ejections (ICMEs) and IP shocks are important to study as they are the main components of solar activity. Hundreds of IP shocks have been detected by various space missions at different times and heliocentric distances. Some of these are followed by clearly identified drivers, while some oth…
Peeking beneath the precision floor - I. Metallicity spreads and multiple elemental dispersions in the globular clusters NGC 288 and NGC 362
Monty, Stephanie; Marino, Anna F.; Karakas, Amanda I. +4 more
The view of globular clusters (GCs) as simple systems continues to unravel, revealing complex objects hosting multiple chemical peculiarities. Using differential abundance analysis, we probe the chemistry of the Type I GC, NGC 288 and the Type II GC, NGC 362 at the 2 per cent level for the first time. We measure 20 elements and find differential m…
On the Nature of the Three-part Structure of Solar Coronal Mass Ejections
Chen, Yao; Xia, Lidong; Li, Leping +4 more
Coronal mass ejections (CMEs) result from eruptions of magnetic flux ropes (MFRs) and can possess a three-part structure in white-light coronagraphs, including a bright front, dark cavity, and bright core. In traditional opinion, the bright front forms due to the plasma pileup along the MFR border, the cavity represents the cross section of the MF…