Galaxies

A still frame from a movie showing an active galactic nucleus (Image NASA / Dana Berry / SkyWorks Digital)

An article in the journal “Monthly Notices of the Royal Astronomical Society” describes a study of the galaxy SAGE0536AGN and in particular the supermassive black hole at its center, which is 30 times larger than expected. This is the result of measurements conducted by a team of astronomers at Keele University and the University of Central Lancashire, an anomaly all to explain.

At left is the galaxy J0702+5002, which the researchers concluded is not an X-shaped galaxy whose form is caused by a merger. At right is the galaxy J1043+3131, which is a "true" candidate for a merged system (Image Roberts, et al., NRAO/AUI/NSF)

While in the field of astrophysics are still talking about a pair of supermassive black holes that will clash in the future, a new study suggests that these situations are rarer than expected. A team of astronomers led by David Roberts of Brandeis University analyzed data collected with the VLA (Very Large Array) to examine cases in which possible galaxy mergers the brought supermassive black holes at their centers to form a pair. The conclusion is that in many cases the galaxy merger is only apparent.

The Astro-E2, then renamed Suzaku, satellite during its test phase (Photo NASA)

In recent days, the Japanese Suzaku space observatory has been deactivated. On August 26, 2015, JAXA, the Japanese space agency, communicated the decision to terminate the mission of this satellite specialized in X-ray astronomy. Communications between the mission control center and Suzaku had become intermittent since June 1, 2015 and JAXA, after trying to restore them, decided to start the deactivation procedures.

The Magellanic Clouds and an interstellar filament seen by the Planck Surveyor satellite (Image ESA and the Planck Collaboration)

ESA has released an image created using data from the Planck Surveyor satellite offering a very special portrait of an interstellar filament and the Magellanic Clouds. Those are two dwarf galaxies that are part of the Milky Way’s neighborhood and Planck detected the dust between the stars within them during its mission. The main purpose of this satellite was to study the cosmic microwave background radiation (CMB or CMBR), but the data collected are also useful to map the galaxies’ dust and magnetic fields.

Composition of multiwavelength images of the galaxy cluster Abell 1033 and the surrounding area (Image NASA/CXC/Univ of Hamburg/F. de Gasperin et al; Optical: SDSS; Radio: NRAO/VLA)

An article in the journal “Monthly Notices of the Royal Astronomical Society” describes a research on the galactic cluster Abell 1033. Combining data from NASA’s Chandra X-ray Observatory, the Westerbork Synthesis Radio Telescope in the Netherlands, NSF’s Karl Jansky Very Large Array (VLA), and the Sloan Digital Sky Survey (SDSS), a team of astronomers reconstructed the history of a cloud of electrons at the cluster’s center. It was reignited after a cosmic collision and for this reason it’s been compared to the legendary phoenix.