39 citations · 163 across the 10 of their papers we have counts for
10 papers
Astrophysical Implications of Eccentricity in Gravitational Waves from Neutron Star-Black Hole Binaries
Isobel Romero-Shaw, Jakob Stegmann, Gonzalo Morras +2
The gravitational-wave signal from the neutron star-black hole (NSBH) merger GW200105 is consistent with this binary having significant orbital eccentricity close to merger. This r…
Gravitational-wave Observations Suggest Most Black Hole Mergers Form in Triples
Jakob Stegmann, Fabio Antonini, Aleksandra Olejak +4
The spin-orbit tilt angles of merging stellar-mass black holes provide key insights into their astrophysical origin. Non-parametric population modelling of The LIGO, Vir…
Distinguishing the Origin of Eccentric Black Hole Mergers with Gravitational-wave Spin Measurements
Jakob Stegmann, Davide Gerosa, Isobel Romero-Shaw +3
It remains an open question whether the binary black hole mergers observed with gravitational-wave detectors originate from the evolution of isolated massive binary stars or were d…
Imprints of massive black-hole binaries on neighbouring decihertz gravitational-wave sources
Jakob Stegmann, Lorenz Zwick, Sander M. Vermeulen +2
The most massive black holes in our Universe form binaries at the centre of merging galaxies. The recent evidence for a gravitational-wave (GW) background from pulsar timing may co…
Double black hole mergers in nuclear star clusters: eccentricities, spins, masses, and the growth of massive seeds
Debatri Chattopadhyay, Jakob Stegmann, Fabio Antonini +2
We investigate the formation of intermediate mass black holes (IMBHs) through hierarchical mergers of stellar origin black holes (BHs), as well as BH mergers formed dynamically in…
Detecting the heterodyning of gravitational waves
Jakob Stegmann, Sander M. Vermeulen
Gravitational waves modulate the apparent frequencies of other periodic signals. Low-frequency gravitational waves could therefore be detected by observing frequency modulations in…
Binary black hole mergers from merged stars in the Galactic field
Jakob Stegmann, Fabio Antonini, Fabian R. N. Schneider +2
The majority of massive stars are found in close binaries which: (i) are prone to merge and (ii) are accompanied by another distant tertiary star (triples). Here, we study the evol…
Evolution of massive stellar triples and implications for compact object binary formation
Jakob Stegmann, Fabio Antonini, Maxwell Moe
Most back hole and neutron star progenitors are found in triples or higher multiplicity systems. Here, we present a new triple stellar evolution code, , which simultaneo…
Flipping spins in mass transferring binaries and origin of spin-orbit misalignment in binary black holes
Jakob Stegmann, Fabio Antonini
Close stellar binaries are prone to undergo a phase of stable mass transfer in which a star loses mass to its companion. Assuming that the donor star loses mass along the instantan…
Improved constraints from ultra-faint dwarf galaxies on primordial black holes as dark matter
Jakob Stegmann, Pedro R. Capelo, Elisa Bortolas +1
Soon after the recent first ever detection of gravitational waves from merging black holes it has been suggested that their origin is primordial. Appealingly, a sufficient number o…