A stylish new study by Remeis astronomers on jetted active galactic nuclei We would like to share a new Astronomy & Astrophysics publication from a team of Remeis astronomers from the X-ray Group of Jörn Wilms presenting the “BlazEr” catalog of blazars and blazar candidates from the ...
Remeis astronomers have devised a new method for measuring magnetic fields in neutron-star atmospheres. Astronomers from the X-ray Group of Prof. Jörn Wilms at the Dr. Karl Remeis Observatory have uncovered a direct correlation between the shape of X-ray spectra and the magnetic field strength of ne...
Remeis astronomers have studied the remnant of a very nearby cosmic explosion. Using data from X-ray and radio maps of the entire sky, astronomers from the Remeis Observatory have confirmed and studied the Antlia supernova remnant, a structure formed by a nearby supernova explosion. Due to its close...
Remeis astronomers have provided the deepest view of diffuse X-ray emission from hot plasma in the Large Magellanic Cloud. When stars explode in violent supernovae, they release an enormous amount of energy, momentum, and material into their surroundings, which leads to lasting imprints on the ̶...
Researchers at the Remeis-Observatory have discovered X-rays from a star which exploded more than 130 years ago. Ernst Hartwig was a German astronomer who became the first director of the Dr Karl Remeis Observatory when it was founded in 1889. Professionally, he became known for the discovery of the...
Researchers led by PhD student Caroline Collischon in the group of Manami Sasaki at the Remeis Observatory have introduced a new way of describing shapes in the night sky. In their recent paper on “Morphometry on the sphere” published in Communications Physics, they adapted a set of powe...
Since 2021, the DFG research unit “eRO-STEP” (eROSITA studies of Stellar Endpoints) has been investigating astrophysical sources of X-ray emission, focusing in particular on compact objects (white dwarfs, neutron stars, and black holes) and hot gas in the interstellar medium. The SRG/eRO...
Welcome to the Arcus simulator! This software was put together between Summer 2014 and Summer 2018 by Jörn Wilms with input from Andy Ptak, Randall Smith, Ryan Allured, Randy McEntaffer, Mark Bautz, Moritz Guenther, and many others. It is a prototype implementation of a simulation and data reconstru...
Arcus is a high resolution X-ray grating spectrometer mission that was proposed to NASA as a MIDEX in 2016 and selected by NASA for a Phase A concept study. It will consist of high resolution (R=2500) transmission gratings mounted behind silicon pore optics as originally developed for Athena. The mi...
The proper modeling of stellar atmospheres is the backbone of any quantitative spectroscopic analysis. Hybrid LTE/non-LTE approach To analyze spectra of early-type stars close or below the main sequence, in particular those of spectral type B, we make use of the so-called hybrid (or ADS) approach, w...
