Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure

Context. The Gaia DR3 catalogue contains, for the first time, about 800 000 solutions with either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing binaries, and combinations of these three.<br/><br/>Aims. With this paper, we aim to illustrate the huge potential of this large non-single-star catalogue.<br/><br/...

Intermediate-mass black holes: finding of episodic, large-scale, and powerful jet activity in a dwarf galaxy

Dwarf galaxies are characterized by a very low luminosity and low mass. Because of significant accretion and ejection activity of massive black holes, some dwarf galaxies also host low-luminosity active galactic nuclei (AGNs). In a few dwarf AGNs, very long baseline interferometry (VLBI) observations have found faint non-thermal radio...

Is there a sub-parsec-scale jet base in the nearby dwarf galaxy NGC 4395?

NGC 4395 is a dwarf galaxy at a distance of about 4.3 Mpc (scale: ∼0.021 pc mas-1). It hosts an intermediate-mass black hole (IMBH) with a mass between ∼104 and ∼105 solar masses. The early radio observations of NGC 4395 with the very long baseline interferometry (VLBI) network, High Sensitivity Array (HSA), at 1.4 GHz in 2005 showed that its...

Development of a workload set for multi-core architectures

With the rise of multi-core chips in commodity hardware, the need for specialized workloads to evaluate the performance of multi-core systems has become apparent. The current generation of workloads used for evaluating multi-core systems often consist of sequential programs not capable of running on multiple processors and are therefore of...