Search Publications
On the Origin of the Magnetic Energy in the Quiet Solar Chromosphere
Martínez-Sykora, Juan; De Pontieu, Bart; Carlsson, Mats +3 more
The presence of magnetic field is crucial in the transport of energy through the solar atmosphere. Recent ground-based and space-borne observations of the quiet Sun have revealed that magnetic field accumulates at photospheric heights, via a local dynamo or from small-scale flux emergence events. However, most of this small-scale magnetic field ma…
Young massive clusters in the interacting LIRG Arp 299: evidence for the dependence of star cluster formation and evolution on environment
Väisänen, P.; Ryder, S. D.; Randriamanakoto, Z. +1 more
Archival WFC3/UVIS imaging of Arp 299 (NGC 3690E+ NGC 3690W) is retrieved to investigate the young massive cluster (YMC) population of this ongoing merger. We extract 2182 cluster candidates, including 1323 high confidence photometric sources. Multiband photometry is matched with Yggdrasil models to estimate the age, mass, and extinction of each c…
Homogeneity of 67P/Churyumov-Gerasimenko as seen by CONSERT: implication on composition and formation
Blum, J.; Vincent, J. -B.; Kofman, W. +3 more
Context. After the landing of Philae, CONSERT probed the nucleus of 67P/Churyumov-Gerasimenko (67P) and observed no heterogeneities at metric scale within the probed part of the small lobe of 67P. Further studies have then quantified the observed homogeneity in terms of maximum permittivity contrast versus the typical size of heterogeneities.
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The PLATO Solar-like Light-curve Simulator. A tool to generate realistic stellar light-curves with instrumental effects representative of the PLATO mission
Smith, A. M. S.; Samadi, R.; Lebreton, Y. +10 more
Context. ESA's PLATO space mission, to be launched by the end of 2026, aims to detect and characterise Earth-like planets in their habitable zone using asteroseismology and the analysis of the transit events. The preparation of science objectives will require the implementation of hare-and-hound exercises relying on the massive generation of repre…
Fluids mobilization in Arabia Terra, Mars: Depth of pressurized reservoir from mounds self-similar clustering
Massironi, Matteo; Cremonese, Gabriele; Pondrelli, Monica +4 more
Arabia Terra is a region of Mars where signs of past-water occurrence are recorded in several landforms. Broad and local scale geomorphological, compositional and hydrological analyses point towards pervasive fluid circulation through time. In this work we focus on mound fields located in the interior of three casters larger than 40 km (Firsoff, K…
NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf
Jackman, James A. G.; Wheatley, Peter J.; Bayliss, Daniel +37 more
We report the discovery of a new ultrashort period hot Jupiter from the Next Generation Transit Survey. NGTS-6b orbits its star with a period of 21.17 h, and has a mass and radius of 1.330^{+0.024}_{-0.028}MJ and 1.271^{+0.197}_{-0.188}RJ, respectively, returning a planetary bulk density of 0.711^{+0.214}_{-0.136} g cm-3…
Cosmological discordances. III. More on measure properties, large-scale-structure constraints, the Hubble constant and Planck data
Ishak, Mustapha; Lin, Weikang; Garcia-Quintero, Cristhian +1 more
Consistency between cosmological datasets is essential for ongoing and future cosmological analyses. We first investigate the questions of stability and applicability of some moment-based inconsistency measures to multiple datasets. We show that the recently introduced index of inconsistency (IOI) is numerically stable while it can be applied to m…
The cosmic spectral energy distribution in the EAGLE simulation
Baes, Maarten; Theuns, Tom; Camps, Peter +4 more
The cosmic spectral energy distribution (CSED) is the total emissivity as a function of wavelength of galaxies in a given cosmic volume. We compare the observed CSED from the UV to the submm to that computed from the EAGLE (Evolution and Assembly of GaLaxies and their Environments) cosmological hydrodynamical simulation, post-processed with stella…
The Birth of a Jet-driven Twin CME and Its Deflection from Remote Magnetic Fields
Shen, Yuandeng; Duan, Yadan; Chen, Hechao +1 more
We report the formation of a complicated coronal mass ejection (CME) on 2015 August 23 by using the high temporal and high spatial resolution multi-wavelength observations taken by the Solar Dynamic Observatory and the Solar and Heliospheric Observatory. The CME exhibited both jetlike and bubble-like components simultaneously, and therefore, we ca…
Evidence for a Young Stellar Population in Nearby Type 1 Active Galaxies
Ho, Luis C.; Kim, Minjin
To understand the physical origin of the close connection between supermassive black holes (BHs) and their host galaxies, it is vital to investigate star formation properties in active galaxies. Using a large data set of nearby type 1 active galactic nuclei (AGNs) with detailed structural decomposition based on high-resolution optical images obtai…