Search Publications
Near-term interstellar probe: First step
Wimmer-Schweingruber, Robert F.; McNutt, Ralph L.; Gruntman, Mike +9 more
Exploration of the heliosphere and the far reaches of our solar system by the Voyagers and New Horizons and near-Earth observations of the Kuiper Belt and exoplanetary systems have all profoundly changed how we view our own home in space. An Interstellar Probe escaping beyond the solar-system boundaries with new observational techniques would be a…
Quantifying the thermal Sunyaev-Zel'dovich effect and excess millimetre emission in quasar environments
Hilton, Matt; Sifón, Cristóbal; Battaglia, Nicholas +23 more
In this paper, we probe the hot, post-shock gas component of quasar-driven winds through the thermal Sunyaev-Zel'dovich (tSZ) effect. Combining data sets from the Atacama Cosmology Telescope, the Herschel Space Observatory, and the Very Large Array, we measure average spectral energy distributions of 109 829 optically selected, radio quiet quasars…
The effect of tides on the Sculptor dwarf spheroidal galaxy
Iorio, G.; Battaglia, G.; Sollima, A. +1 more
Dwarf spheroidal galaxies (dSphs) appear to be some of the most dark matter (DM)-dominated objects in the Universe. Their dynamical masses are commonly derived using the kinematics of stars under the assumption of equilibrium. However, these objects are satellites of massive galaxies (e.g. the Milky Way) and thus can be influenced by their tidal f…
The Interplay of the Solar Wind Core and Suprathermal Electrons: A Quasilinear Approach for Firehose Instability
Lazar, M.; Poedts, S.; Yoon, P. H. +1 more
In the solar wind an equipartition of kinetic energy densities can be easily established between thermal and suprathermal electrons and the instability conditions are markedly altered by the interplay of these two populations. The new thresholds derived here for the periodic branch of firehose instability shape the limits of temperature anisotropy…
Transfer of Twists from a Mini-filament to Large-scale Loops by Magnetic Reconnection
Li, Ting; Xue, Zhike; Yan, Xiaoli +4 more
With high spatial and temporal resolution, Hα data from the New Vacuum Solar Telescope, X-ray images from the X-ray telescope on board Hinode and simultaneous observations from the Solar Dynamics Observatory, we present multiwavelength observations of the interaction between a mini-filament (MF) and its overlying large-scale active-region loops (A…
A systematic study of Galactic infrared bubbles along the Galactic plane with AKARI and Herschel
Oyabu, Shinki; Kaneda, Hidehiro; Ishihara, Daisuke +7 more
Galactic infrared (IR) bubbles, which have shell-like structures in the mid-IR wavelengths, are known to contain massive stars near their centers. Infrared bubbles in inner Galactic regions (|l| ≤ 65°, |b| ≤ 1°) have so far been studied well to understand the massive star formation mechanisms. In this study, we expand the research area to the whol…
Spectral Evolution and Radial Dust Transport in the Prototype Young Eruptive System EX Lup
Carmona, A.; Ábrahám, P.; Chen, L. +7 more
EX Lup is the prototype of a class of pre-main-sequence eruptive stars defined by their repetitive outbursts lasting several months. In 2008 January-September EX Lup underwent its historically largest outburst, brightening by about 4 mag in visual light. In previous studies we discovered ongoing silicate crystal formation in the inner disk during …
Jovian Auroral Radio Sources Detected In Situ by Juno/Waves: Comparisons With Model Auroral Ovals and Simultaneous HST FUV Images
Kurth, W. S.; Lamy, L.; Zarka, P. +4 more
Since the discovery of Jovian auroral radio emissions, the question arises of the source positions of the different components (broadband kilometric, hectometric, and decametric) and their association with far ultraviolet (FUV) auroral emissions. We surveyed Juno's first 15 perijoves to track local radio sources from in situ Juno/Waves measurement…
Green Peas in X-Rays
Ehle, M.; Svoboda, J.; Orlitová, I. +1 more
Green Peas represent a population of compact, highly star-forming dwarf galaxies at redshifts z ∼ 0.2-0.3 that have recently been found to show signatures of ultraviolet ionizing radiation leakage. They are being considered as analogs to high-redshift star-forming galaxies, possibly responsible for cosmic reionization. Despite intensive studies of…
Observing the gas component of circumplanetary disks around wide-orbit planet-mass companions in the (sub)mm regime
Waters, L. B. F. M.; Woitke, P.; Kamp, I. +6 more
Context. Several detections of wide-orbit planet-mass/substellar companions around young solar-like stars were reported in the last decade. The origin of those possible planets is still unclear, but accretion tracers and VLT/SPHERE observations indicate that they are surrounded by circumplanetary material or even a circumplanetary disk (CPD).
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