News about Astrophysics

Snapshot of cosmic burst of radio waves

A strange phenomenon has been observed by astronomers right as it was happening – a ‘fast radio burst’. The eruption is described as an extremely short, sharp flash of radio waves from an unknown source in the universe.

Maria Cavallius

Dark energy parametrization driven bias in cosmological parameter estimation Academic Supervisors: Steen H. Hansen and Stefania Pandolf

Allison Man

Galaxy Evolution Over the Past Eleven Billion Years: Mergers and Quiescence Advisor: Sune Toft Co-advisor: Andrew Zirm

Asger Grønnow

Mergers produce outliers from the fundamental metallicity relation Academic Supervisors: Kristian Finlator and Lise Christensen

Using supermassive black holes to measure cosmic distances

One of the major problems in astronomy is measuring very large distances in the universe. Research from DARK shows that precise distances can be measured using supermassive black holes. The results are now published in…

Mystery of dwarf galaxy could be ejected black hole

Astronomers have observed a mysterious pheno- menon, which could be a massive black hole that has been ejected into space in connection with two galaxies colliding. This may be due to gravitational waves from the…

Jesper Mirsa Skottfelt

Improving Lucky Imaging Photometry Using the Two-Colour EMCCD Instrument at the Danish 1.54m telescope Supervisor: Uffe Gråe Jørgensen

Martin Sparre

Galaxy formation: observations and simulations of galaxies Supervisor: Prof. Johan Peter Uldall Fynbo

Xue Li

Exploring Cosmology with Supernovae - A study of supernovae and their applications Supervisor: Anja C. Andersen

Timmi Grosen Jørgensen

Investigation of the Magnetically Active Detached Eclipsing Binary System V80 using New Photometric Observations from The Kepler Space Telescope Supervisor: Anja C. Andersen

Mikkel Stockmann

Counting Holes in the Universe Academic Supervisors: Signe Riemer-Sørensen, University of Oslo (UiO) Tamara M. Davis, University of Queensland (UQ) Steen H. Hansen, University of Copenhagen, Dark Cosmology Centre

Sarah Massalkhi

Circumstellar Dust Shells around Evolved Massive Stars Supervisor: Anja C. Andersen

Johan Samsing

DYNAMICS OF STARS, DARK MATTER AND THE UNIVERSE Supervisor: Steen H. Hansen

Ece Kilerci Eser

ACTIVE GALAXIES: A Study of Local Seyferts and Ultra Luminous Infrared Galaxies Supervisor: Marianne Vestergaard

William Gryffydd Beynon Parry

Analysing the Mass Structure of Small Gravitational Lens Galaxies in Galaxy Clusters Supervisors: Claudio Grillo (DARK Fellow) and Lise Christensen (Assoc. Prof.)

Cosmic grains of dust formed in supernova explosion

New research published in Nature shows that not only can grains of dust form in gigantic supernova explosions, they can also survive the subsequent shockwaves they are exposed to. Led by researchers from Aarhus and DARK

Rikke Lund Saust

Investigating the Nature of Damped Lyman-α Absorbing Galaxies Supervisor: Lise Christensen

Ann-Sofie Bak Nielsen

Extinction curves and the total-to-selective extinction ratio for dust formed in the type IIn SN 2005ip Supervisor: Jens Hjorth

Jacob Svensmark

Effect of asphericity in caustic mass estimates of galaxy clusters Supervisor: : Assoc Prof Steen H. Hansen

Teddy Fjeldgaard Frederiksen

NURSERIES OF SUPERNOVAE A STUDY OF YOUNG HIGH REDSHIFT TYPE IA SUPERNOVA HOST GALAXIES Supervisor: Jens Hjorth

Martina Falco

DYNAMICS OF GALAXY CLUSTERS AND THEIR OUTSKIRTS: beyond the virialization regime Supervisor: Steen H. Hansen

Stefan Geier

PIECES TO THE PUZZLE OF HIGH-REDSHIFT GALAXIES FALLING INTO PLACE Supervisor: Johan Peter Uldall Fynbo

Elena Sacchi

Constraining mass and shape of galaxy clusters through large scale structures Supervisors: Lauro Moscardini and Steen H. Hansen

Monster gamma-ray burst in our cosmic neighbourhood

Gamma-ray bursts are violent bursts of gamma radiation associated with exploding massive stars. For the first time ever, researchers from DARK, among others, have observed an unusually powerful gamma-ray