Search Publications
Missions
Journals
Publication Years
Galaxy evolution in merging clusters: The passive core of the "Train Wreck" cluster of galaxies, A 520
Park, Byeong-Gon; Hwang, Narae; Hwang, Ho Seong +9 more
Aims: The mergers of galaxy clusters are the most energetic events in the Universe after the Big Bang. With the increased availability of multi-object spectroscopy and X-ray data, an ever increasing fraction of local clusters are recognised as exhibiting signs of recent or past merging events on various scales. Our goal is to probe how these …
An ALMA survey of submillimetre galaxies in the COSMOS field: The extent of the radio-emitting region revealed by 3 GHz imaging with the Very Large Array
Bondi, M.; Magnelli, B.; Aussel, H. +32 more
Context. The observed spatial scale of the radio continuum emission from star-forming galaxies can be used to investigate the spatial extent of active star formation, constrain the importance of cosmic-ray transport, and examine the effects of galaxy interactions.
Aims: We determine the radio size distribution of a large sample of 152 submill…
Constraints on Io's interior from auroral spot oscillations
Saur, Joachim; Roth, Lorenz; Feldman, Paul D. +3 more
The morphology of Io's aurora is dominated by bright spots near the equator that oscillate up and down in approximate correlation with the oscillating orientation of the Jovian magnetospheric field. Analyzing Hubble Space Telescope images, we find that the auroral spots oscillate in phase with the time-variable Jovian magnetic field at Io and that…
An atlas of exotic variability in IGR J17091-3624: a comparison with GRS 1915+105
Court, J. M. C.; Altamirano, D.; Belloni, T. +5 more
We performed an analysis of all Rossi X-ray Timing Explorer observations of the low-mass X-ray binary (LMXB) and black hole candidate IGR J17091-3624 during the 2011-2013 outburst of the source. By creating light curves, hardness-intensity diagrams and power density spectra of each observation, we have created a set of nine variability 'classes' t…
Modelling the ArH+ emission from the Crab nebula
Barlow, M. J.; Viti, S.; Priestley, F. D.
We have performed combined photoionization and photodissociation region (PDR) modelling of a Crab nebula filament subjected to the synchrotron radiation from the central pulsar wind nebula, and to a high flux of charged particles; a greatly enhanced cosmic-ray ionization rate over the standard interstellar value, ζ0, is required to acco…
Search for aluminium monoxide in the winds of oxygen-rich AGB stars
Menten, K. M.; Olofsson, H.; Decin, L. +4 more
Context. Aluminium monoxide (AlO) is likely efficiently depleted from the gas around oxygen-rich evolved stars to form alumina (Al2O3) clusters and dust seeds. The presence of AlO gas in the extended atmospheres of evolved stars has been derived from optical spectroscopy. More recently, AlO gas was also detected at long wavel…
Cusp-shaped Structure of a Jet Observed By IRIS and SDO
Zhang, Jun; Zhang, Yuzong
On 2014 August 29, the trigger and evolution of a cusp-shaped jet were captured in detail at 1330 Å by the Interface Region Imaging Spectrograph. At first, two neighboring mini-prominences arose in turn from the low solar atmosphere and collided with a loop-like system over them. The collisions between the loop-like system and the mini-prominences…
The opposition effect of 67P/Churyumov-Gerasimenko on post-perihelion Rosetta images
Jorda, L.; Lamy, P. L.; Bertaux, J. -L. +45 more
High-resolution OSIRIS/Rosetta images of 67P/Churyumov-Gerasimenko acquired on the night run of 2016 April 9-10 show, at large scale, an opposition effect (OE) spot sweeping across Imhotep as the phase angle ranges from 0° to 17°. In this work, we fitted the phase curve of the whole surface imaged as well as three particular features using both th…
A study of halo and relic radio emission in merging clusters using the Murchison Widefield Array
Callingham, J. R.; Johnston-Hollitt, M.; Intema, H. T. +18 more
We have studied radio haloes and relics in nine merging galaxy clusters using the Murchison Widefield Array (MWA). The images used for this study were obtained from the GaLactic and Extragalactic All-sky MWA (GLEAM) Survey which was carried out at five frequencies, viz. 88, 118, 154, 188 and 215 MHz. We detect diffuse radio emission in eight of th…
Ion acoustic waves at comet 67P/Churyumov-Gerasimenko. Observations and computations
Gunell, H.; Altwegg, K.; Glassmeier, K. -H. +15 more
Context. On 20 January 2015 the Rosetta spacecraft was at a heliocentric distance of 2.5 AU, accompanying comet 67P/Churyumov-Gerasimenko on its journey toward the Sun. The Ion Composition Analyser (RPC-ICA), other instruments of the Rosetta Plasma Consortium, and the ROSINA instrument made observations relevant to the generation of plasma waves i…