Giant radio sources (GRSs) defined to be> 0.7 Mpc are the largest single objects in the
Universe and can be associated with both galaxies (GRGs) and quasars (GRQs). They are …

It has long been suspected that powerful radio sources may lower the efficiency with which
stars form from the molecular gas in their host galaxy, however so far, alternative …

It is commonly accepted that radio-loud active galactic nuclei are hosted exclusively by giant
elliptical galaxies. We analyze high-resolution optical Hubble Space Telescope images of a …

Star-forming galaxies like the Milky Way are surrounded by a hot gaseous halo at the virial
temperature–the so-called galactic corona–that plays a fundamental role in their evolution …

Observations of the intracluster medium (ICM) in the outskirts of the Virgo cluster with
Suzaku have found the gas mass fraction in the northern direction to be significantly above …

Previous studies of the massive nearby galaxy cluster Abell 3558 reported a cold front
around the cluster core, which is attributed to the sloshing of the core as it responds to the …

Double-spiral galaxies are common in the Universe. It is known that the logarithmic double
spiral is a Maximum Entropy geometry in hyperbolic (flat) spacetime that well represents an …

Hot ionized gas is important in the baryon cycle of galaxies and contributes the majority of
their 'missing baryons'. Until now, most semi-analytic models of galaxy formation have paid …

We present an analysis of new VLT/MUSE optical imaging spectroscopic data of 2MASX
J23453268–0449256 (J2345–0449), a nearby (z= 0.0755) massive (M stellar= 4× 10 11 …

Positron annihilation line at 511 keV is a known component of the gamma-ray diffuse
emission. It is believed to be produced in the Galaxy, but there could be possible …