196 citations · 1.2k across the 34 of their papers we have counts for
34 papers
Brightest group and cluster galaxies as indicators of relaxation
K. Kelder, P. Heinämäki, P. Nurmi +2
Context. Galaxy groups and clusters are widely used to probe the evolution of the cosmic web and cosmology, while assuming that they are relaxed. Aims. We identify the properties o…
Quasi-spherical superclusters
Pekka Heinämäki, Pekka Teerikorpi, Marian Douspis +5
Generally the dynamical state of superclusters is poorly known. We study properties of superclusters and select a sample of quasi-spherical superclusters, the dynamics of which can…
The Corona Borealis supercluster: connectivity, collapse, and evolution
Maret Einasto, Rain Kipper, Peeter Tenjes +7
We present a study of the Corona Borealis (CB) supercluster. We determined the high-density cores of the CB and the richest galaxy clusters in them, and studied their dynamical sta…
Long-term optical monitoring of TeV emitting Blazars
K. Nilsson, E. Lindfors, L. O. Takalo +17
We present 10 years of R-band monitoring data of 31 northern blazars which were either detected at very high energy (VHE) gamma rays or listed as potential VHE gamma-ray emitters.…
The effect of cosmic web filaments on the properties of groups and their central galaxies
Anup Poudel, Pekka Heinämäki, Elmo Tempel +3
The nature versus nurture scenario in galaxy and group evolution is a long-standing problem not yet fully understood on cosmological scales. We study the properties of groups and t…
Sloan Great Wall as a complex of superclusters with collapsing cores
Maret Einasto, Heidi Lietzen, Mirt Gramann +6
In the cosmic web, galaxy superclusters or their high-density cores are the largest objects that may collapse at present or during the future evolution. We study the dynamical stat…