788 citations · 2.3k across the 36 of their papers we have counts for
9 papers · 1 filter
Rapid onset of the 21-cm signal suggests a preferred mass range for dark matter particle
Venno Vipp, Andi Hektor, Gert Hütsi
We are approaching a new era to probe the 21-cm neutral hydrogen signal from the period of cosmic dawn. This signal offers a unique window to the virgin Universe, e.g., to study da…
Constraints on primordial black hole dark matter from Galactic center X-ray observations
Andi Hektor, Gert Hütsi, Martti Raidal
Surprisingly high masses of the black holes inferred from the LIGO & Virgo gravitational wave measurements have lead to speculations that the observed mergers might be due to ${\ca…
Constraining Primordial Black Holes with the EDGES 21-cm Absorption Signal
Andi Hektor, Gert Hütsi, Luca Marzola +3
The EDGES experiment has recently measured an anomalous global 21-cm spectrum due to hydrogen absorptions at redshifts of about . Model independently, the unusually low t…
Search for Dark Matter Effects on Gravitational Signals from Neutron Star Mergers
John Ellis, Andi Hektor, Gert Hütsi +4
Motivated by the recent detection of the gravitational wave signal emitted by a binary neutron star merger, we analyse the possible impact of dark matter on such signals. We show t…
Simulations of Galaxy Cluster Collisions with a Dark Plasma Component
Christian Spethmann, Hardi Veermäe, Tiit Sepp +4
Dark plasma is an intriguing form of self-interacting dark matter with an effective fluid-like behavior, which is well motivated by various theoretical particle physics models. We…
A new mechanism for dark energy: the adaptive screening
Andi Hektor, Luca Marzola, Martti Raidal +1
We describe how known matter effects within a well-motivated particle physics framework can explain the dark energy component of the Universe. By considering a cold gas of particle…