The Hubble Space Telescope was used to capture the details of of the Trumpler 14 open cluster. This is one of the largest groups of stars that are massive and as a consequence very bright in the Milky Way. It’s a young cluster in astronomical terms as its aged is about half a million years. It has a diameter of about six light years and within it about 2,000 stars of very diverse masses were identified.
The ALMA radio telescope allowed us to study the extraordinary events taking place in the galaxy W2246-0526, the brightest we know. It’s a quasar because its core is powered by a supermassive black hole that has a considerable activity that generates enormous jets of particles and high-energy radiation. This one in particular is part of a special category of quasars because it’s full of dust that absorbs a lot of radiation. However, the consequence of this activity is a turbulent activity that is expelling the gas.
An article published in the journal “Science” describes the discovery of the supernova ASASSN-15lh, the brightest discovered so far. A team of astronomers led by Subo Dong, of the Kavli Institute for Astronomy and Astrophysics at Peking University, China, studied this explosion that is extraordinary even by the standards of these events: it’s more than twice as bright as the one that held the record, about 200 times brighter than the average supernova, 570 billion times brighter than the Sun, and 20 times brighter than all the stars in the Milky Way put together.
An article published in the journal “Astronomy & Astrophysics” describes the discovery of the the most energetic pulses ever detected in a pulsar. An international team of scientists used the two MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescopes at the Roque de los Muchachos Observatory on La Palma, Canary Islands, to observe the Crab pulsar.
At the 227th meeting of the American Astronomical Society in Kissimmee, Florida there was a presentation of significant improvements that NASA obtained to the performance of its Fermi Gamma-ray Space Telescope. The data collected by its Large Area Telescope (LAT) instrument were analyzed again in what was called Pass 8 with a new software. That allowed to discover new gamma ray sources that previously weren’t identified. At the same time it was possible to improve the ability of the LAT to determine the direction of the incoming gamma rays.