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Simultaneous optical/X-ray study of GS 1354-64 (=BW Cir) during hard outburst: evidence for optical cyclo-synchrotron emission from the hot accretion flow
Gandhi, Poshak; Altamirano, Diego; Misra, Ranjeev +3 more
We present results from simultaneous optical [South African Large Telescope (SALT)] and X-ray (Swift and INTEGRAL) observations of GS 1354-64/BW Cir during the 2015 hard state outburst. During the rising phase, optical/X-ray time series shows a strong anti-correlation with X-ray photons lagging optical. Optical and X-ray power spectra show quasi-p…
Soft extragalactic X-ray binaries at the Eddington Threshold
Roberts, Timothy P.; Earnshaw, Hannah M.
The luminosity range at and just below the 1039 erg s-1 cut-off for defining ultraluminous X-ray sources (ULXs) is a little-explored regime. It none the less hosts a large number of X-ray sources, and has great potential for improving our understanding of sources with ∼Eddington accretion rates. We select a sample of four sou…
Listing of 502 Times When the Ulysses Magnetic Fields Instrument Observed Waves Due to Newborn Interstellar Pickup Protons
Isenberg, Philip A.; Murphy, Neil; Cannon, Bradford E. +4 more
In two earlier publications we analyzed 502 intervals of magnetic waves excited by newborn interstellar pickup protons that were observed by the Ulysses spacecraft. Due to the considerable effort required in identifying these events, we provide a list of the times for the 502 wave event intervals previously identified. In the process, we provide a…
The final year of the Rosetta mission
Ferri, Paolo; Accomazzo, Andrea; Hubault, Armelle +6 more
The International Rosetta Mission was launched on 2nd March 2004 on its 10 year journey to rendezvous with comet 67P Churyumov-Gerasimenko. Rosetta performed comet orbit insertion on the 6th of August 2014, after which it characterised the nucleus and orbited it at altitudes as low as a few kilometres. In November 2014 Rosetta delivered the lander…
Unbiased Large Spectroscopic Surveys of Galaxies Selected by SPICA Using Dust Bands
Pozzi, F.; Scott, D.; Wang, L. +27 more
The mid-infrared range contains many spectral features associated with large molecules and dust grains such as polycyclic aromatic hydrocarbons and silicates. These are usually very strong compared to fine-structure gas lines, and thus valuable in studying the spectral properties of faint distant galaxies. In this paper, we evaluate the capability…
Morphology of Ganymede's FUV auroral ovals
Saur, Joachim; Roth, Lorenz; Feldman, Paul D. +4 more
We study the morphology of Ganymede's FUV aurora by analyzing spectral images obtained over the past two decades by the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. The observations cover the eastern and western elongation as well as various magnetic latitudes of Ganymede within the Jovian plasma sheet. We find both as…
Rosetta Lander - Philae: Operations on comet 67P/Churyumov-Gerasimenko, analysis of wake-up activities and final state
Mottola, Stefano; Scholten, Frank; Kührt, Ekkehard +19 more
The Lander Philae, part of the ESA Rosetta mission successfully landed on comet 67P/Churyumov- Gerasimenko on November 12th, 2014. After several (unplanned) bounces it performed a First Scientific Sequence (FSS), based on the energy stored in its on board batteries. All ten instruments of the payload aboard Philae have been operated at least once.…
Binary Star Orbits. V. The Nearby White Dwarf/Red Dwarf Pair 40 Eri BC
Mason, Brian D.; Hartkopf, William I.; Miles, Korie N.
A new relative orbit solution with new dynamical masses is determined for the nearby white dwarf-red dwarf pair 40 Eri BC. The period is 230.29 ± 0.68 years. It is predicted to close slowly over the next half-century, getting as close as 1"32 in early 2066. We determine masses of 0.573 ± 0.018 M⊙ for the white dwarf and 0.2036 ± 0.0064 …
A Comparison of the Most Massive Quiescent Galaxies from z ∼ 3 to the Present: Slow Evolution in Size, and spheroid-dominated
Patel, Shannon G.; Quadri, Ryan F.; Williams, Rik J. +2 more
We use Hubble Space Telescope imaging to study the structural properties of 10 of the most massive (M≥slant {10}11.25 {M}⊙ ) quiescent galaxies (QGs) in the UKIDSS UDS at 2.5< z< 3.0. The low spatial density of these galaxies required targeted WFC3 H 160 imaging, as such systems are rare in existing surveys l…
A 3D model for carbon monoxide molecular line emission as a potential cosmic microwave background polarization contaminant
Baccigalupi, C.; Fabbian, G.; Puglisi, G.
We present a model for simulating carbon monoxide (CO) rotational line emission in molecular clouds, taking account of their 3D spatial distribution in galaxies with different geometrical properties. The model implemented is based on recent results in the literature and has been designed for performing Monte Carlo (MC) simulations of this emission…