Search Publications
Mapping dust in the giant molecular cloud Orion A
Magorrian, John; Gration, Amery
The Sun is located close to the Galactic mid-plane, meaning that we observe the Galaxy through significant quantities of dust. Moreover, the vast majority of the Galaxy's stars also lie in the disc, meaning that dust has an enormous impact on the massive astrometric, photometric and spectroscopic surveys of the Galaxy that are currently underway. …
A Serendipitous Observation of the Recently Discovered Cataclysmic Variable TUVO-21acq
Kuntz, K. D.; Pfeifle, Ryan W.; Weaver, Kimberly A. +2 more
The recently discovered non-magnetic cataclysmic variable TUVO-21acq was serendipitously observed in a quiescent state during an XMM-Newton observing campaign for the starburst galaxy NGC 4945. Data from this campaign was combined with archival serendipitous XMM observations to examine its X-ray and UV/optical characteristics. TUVO-21acq was found…
Discovering changing-look AGN in the 6dF Galaxy Survey using ATLAS light curves
Wolf, Christian; Lai, Samuel; Tonry, John L. +4 more
Changing-look active galactic nuclei (CLAGNs) are characterized by extreme variations in line emission over short time-scales, mostly affecting broad H
Measurements of visual double stars with PISCO2 at the Nice 76-cm refractor in 2016-2017
Piccotti, Luca; Rivet, Jean-Pierre; Vakili, Farrokh +11 more
We present relative astrometric and photometric measurements of visual double stars made in 2016-2017, with PISCO2 installed at the 76-cm refractor of Côte d'Azur Observatory in Nice (France). Our observing list contains orbital couples as well as double stars whose motion is still uncertain. Three different techniques were used for obtaining meas…
Hidden by a star: The redshift and the offset broad line of the flat-spectrum radio quasar PKS 0903–57
Goldoni, P.; Boisson, C.; Pita, S. +5 more
Context. PKS 0903‑57 is a little-studied γ-ray blazar that has recently attracted considerable interest due to the strong flaring episodes observed since 2020 in high energy (HE; 100 MeV ≤ E ≤ 100 GeV) and very high-energy (VHE; 100 GeV ≤ E ≤ 10 TeV) γ-rays. Its nature and properties are still not well determined. In particular, it is unclear whet…
El rol de las características y evolución de las regiones activas solares en la producción de fulguraciones y eyecciones coronales de masa
López Fuentes, M.
Solar events such as flares and coronal mass ejections (CMEs) are the most energetic phenomena affecting interplanetary space in timescales from minutes to a few days. With the main aim of establishing parameters to be used in the prediction of phenomena with potential impact on space weather, there has been in recent years a strong interest in de…
X-rays from a newly discovered superbubble in M31
Li, Hui; Mao, Junjie; Cui, Wei +3 more
A superbubble is a hot, dilute, and X-ray-emitting gas cavity produced by stellar winds and supernova explosions. It is an intriguing feature for the study of stellar feedback processes. We report a study of possible superbubbles in the Andromeda Galaxy (M31). We identify one out of 83 extended sources as a strong superbubble candidate, SB1, from …
The Complex Structure of the Abell 548–Abell 3367 Region
Henriksen, Mark J.; Ahmed, Layla
Archival XMM and ROSAT X-Ray data are used to investigate the structure of the Abell 548–Abell 3367 region. Based on previous optical studies, this is a region likely to be rich in structure, although studies are in disagreement regarding the connection between Abell 3367 and Abell 548. We use the available archival X-Ray data together with kinema…
The GAPS Programme at TNG. LIII. New insights on the peculiar XO-2 system
Marzari, F.; Sozzetti, A.; Lanza, A. F. +20 more
Context. Planets in binary systems are a fascinating and yet poorly understood phenomenon. Since there are only a few known large-separation systems in which both components host planets, characterizing them is a key target for planetary science.
Aims: In this paper, we aim to carry out an exhaustive analysis of the interesting XO-2 system, w…
LBM-DEM modeling of particle-fluid interactions on active small solar bodies
Wang, Qiujun; Cheng, Bin; Baoyin, Hexi +1 more
Context. Aeolian-like surface features observed on small Solar System bodies have piqued interest in their underlying formation mechanisms. Understanding the evolution of fluid-solid interactions is crucial for elucidating the nature of cometary activity. Aims. We established a resolved fluid-particle simulation approach and implemented it into ou…