Search Publications
Observations of whistler mode waves by Solar Orbiter's RPW Low Frequency Receiver (LFR): In-flight performance and first results
Maksimovic, M.; Bale, S. D.; Chust, T. +29 more
Context. The Radio and Plasma Waves (RPW) instrument is one of the four in situ instruments of the ESA/NASA Solar Orbiter mission, which was successfully launched on February 10, 2020. The Low Frequency Receiver (LFR) is one of its subsystems, designed to characterize the low frequency electric (quasi-DC - 10 kHz) and magnetic (∼1 Hz-10 kHz) field…
Detection of volatiles undergoing sublimation from 67P/Churyumov-Gerasimenko coma particles using ROSINA/COPS. I. The ram gauge
Altwegg, K.; Balsiger, H.; Rubin, M. +5 more
Context. The ESA Rosetta mission has allowed for an extensive in situ study of the comet 67P/Churyumov-Gerasimenko. In measurements performed by the ram gauge of the COmet Pressure Sensor (COPS), observed features are seen to deviate from the nominal ram gauge signal. This effect is attributable to the sublimation of the volatile fraction of comet…
A search for X-ray absorbed sources in the 3XMM catalogue using photometric redshifts and Bayesian spectral fits
Georgantopoulos, I.; Corral, A.; Ruiz, A.
Since its launch in 1999, the XMM-Newton mission has compiled the largest catalogue of serendipitous X-ray sources, with the 3XMM being the third version of this catalogue. This was possible thanks to the combination of a large effective area (5000 cm2 at 1 keV) and a wide field of view (30 arcmin). The 3XMM-DR6 catalogue contains about…
The bi-modal 7Li distribution of the Milky Way's thin-disk dwarf stars. The role of Galactic-scale events and stellar evolution
Cifuentes, C.; Roca-Fàbrega, S.; Llorente de Andrés, F. +2 more
Context. The lithium abundance, A(Li), in stellar atmospheres suffers from various enhancement and depletion processes during the star's lifetime. While several studies have demonstrated that these processes are linked to the physics of stellar formation and evolution, the role that Galactic-scale events play in the galactic A(Li) evolution is not…
Multi-wavelength observations and modelling of a quiescent cloud LDN1512
Ysard, Nathalie; Juvela, Mika; Saajasto, Mika +2 more
Context. Light scattering at near-infrared (NIR) wavelengths has been used to study the optical properties of the interstellar dust grains, but these studies are limited by the assumptions on the strength of the radiation field. On the other hand, thermal dust emission can be used to constrain the properties of the radiation field, although this i…
Properties of a hypothetical cold pulsar wind in LS 5039
Bosch-Ramon, V.
Context. LS 5039 is a powerful high-mass gamma-ray binary that probably hosts a young non-accreting pulsar. However, despite the wealth of data available, the means by which the non-thermal emitter is powered are still unknown.
Aims: We use a dynamical-radiative numerical model, and multiwavelength data, to constrain the properties of a hypot…
INTEGRAL discovery of a high-energy tail in the microquasar Cygnus X-3
Rodriguez, J.; Wilms, J.; Laurent, P. +3 more
Context. The X-ray spectra of X-ray binaries are dominated by emission of either soft or hard X-rays which defines their soft and hard spectral states. While the generic picture is relatively well understood, little is known about the interplay of the various media at work, or about the reasons why some sources do not follow common behavior. Cygnu…
The aftermath of nova Centauri 2013 (V1369 Centauri)
Howell, Steve B.; Shore, Steven N.; Kuin, Paul +3 more
Context. Classical nova progenitors are cataclysmic variables and very old novae are observed to match systems with high mass transfer rates and (relatively) long orbital periods. However, the aftermath of a classical nova has never been studied in detail.
Aims: We intend to probe the aftermath of a classical nova explosion in cataclysmic var…
Fast outflows in protoplanetary nebulae and young planetary nebulae observed by Herschel/HIFI
Teyssier, D.; García-Lario, P.; Alcolea, J. +4 more
Context. Fast outflows and their interaction with slow shells (generally known as the fossil circumstellar envelope of asymptotic giant branch stars) play an important role in the structure and kinematics of protoplanetary and planetary nebulae (pPNe, PNe). To properly study their effects within these objects, we also need to observe the intermedi…
Deep transfer learning for the classification of variable sources
Bailer-Jones, Coryn A. L.; Kim, Dae-Won; Yeo, Doyeob +1 more
Ongoing or upcoming surveys such as Gaia, ZTF, or LSST will observe the light curves of billions or more astronomical sources. This presents new challenges for identifying interesting and important types of variability. Collecting a sufficient amount of labeled data for training is difficult, especially in the early stages of a new survey. Here we…