35 citations · 166 across the 25 of their papers we have counts for
26 papers
The OpenGadget3 Code for Cosmological Simulations
Klaus Dolag, Geray S. Karademir, Luca Tornatore +28
We present the public release of OpenGadget3 (OG3), a substantially extended and re-organised version of the widely used Gadget-2/3 family of cosmological simulation codes. Since G…
Distinguishing cold and self-interacting dark matter through topological analysis
Adrian Szpilfidel, Clotilde Laigle, Pierre Boldrini +2
Alternative dark matter (DM) models have emerged to solve the challenges faced by the predictions of collisionless cold dark matter (CDM) on galactic scales ( Mpc). How…
Searching for signatures of self-interacting dark matter in halos from full physics simulations: From 3D structure to projected observables
Giovanni Y. Ferron, Antonio Ragagnin, Lorenzo Pizzuti +1
In this work we explore the imprints of self-interacting dark matter (SIDM) on the structure of simulated galaxy groups and clusters in view of future optical surveys. We find that…
Intracluster light and dark matter halo shapes reflect common assembly, not mutual coupling: shape correspondence in CDM but not SIDM
G. Martin, N. A. Hatch, W. Cui +8
The intracluster light (ICL) has been proposed as a luminous tracer of the dark matter (DM) halo shape in galaxy clusters, with recent observational studies and CDM simulations…
Cooling, conduction, compact objects: Gravothermal evolution of dissipative self-interacting dark matter halos
Ludwig D. Schmidt, Moritz S. Fischer, Mathias Garny
Many proposed self-interacting dark matter (SIDM) models give rise to radiative processes that can dissipate energy. Understanding their impact on astrophysical objects through sim…
Survival of the most compact: the life and death of satellite halos in self-interacting dark matter
David Klemmer, Moritz S. Fischer, Kimberly K. Boddy +2
Self-interacting dark matter (SIDM) models feature short-range interactions between dark matter (DM) particles that lead to larger diversity in the inner parts of galactic rotation…
The Cosmological Simulation Code OpenGadget3 - Implementation of Self-Interacting Dark Matter
Moritz S. Fischer, Marc Wiertel, Cenanda Arido +7
Dark matter (DM) could be subject to non-gravitational self-interactions which is relevant to resolve potential problems of cold DM on small scales. Their impact on astrophysical o…
Testing the isothermal Jeans model for self-interacting dark matter halos in the collapse phase
Shubo Li, Moritz S. Fischer, Zixiang Jia +3
We benchmark the semi-analytical isothermal Jeans model against a high-resolution isolated N-body simulation that follows a self-interacting dark matter (SIDM) halo into deep core…
The dark fate of ultra-faint dwarfs: Gravothermal collapse in action
Moritz S. Fischer, Hai-Bo Yu
Ultra-faint dwarf (UFD) galaxies are a promising probe for dark matter (DM) physics as they are the most DM-dominated systems known. The Milky Way (MW) hosts many UFDs for which th…
To collapse or not to collapse: Halo evolution with self-interacting dark matter mass segregation
Yashraj Patil, Moritz S. Fischer
Surprisingly compact substructures in galaxies and galaxy clusters, but also field halos, have been observed by gravitational lensing. They could be difficult to explain with colli…
Accurately simulating core-collapse self-interacting dark matter halos
Moritz S. Fischer, Hai-Bo Yu, Klaus Dolag
The properties of satellite halos provide a promising probe for dark matter (DM) physics. Observations have motivated current efforts to explain surprisingly compact DM halos. If D…
Accretion of self-interacting dark matter onto supermassive black holes
V. M. Sabarish, Marcus Brüggen, Kai Schmidt-Hoberg +1
Dark matter (DM) spikes around supermassive black holes (SMBHs) may lead to interesting physical effects such as enhanced DM annihilation signals or dynamical friction within binar…
N-body simulations of dark matter-baryon interactions
Moritz S. Fischer, Klaus Dolag, Mathias Garny +3
Dark matter (DM) particles can interact with particles of the standard model. Although there are a number of constraints derived from direct and indirect detection experiments, the…
Simulating realistic self-interacting dark matter models including small and large-angle scattering
Cenanda Arido, Moritz S. Fischer, Mathias Garny
Dark matter (DM) self-interactions alter the matter distribution on galactic scales and alleviate tensions with observations. A feature of the self-interaction cross section is its…
Dynamical friction from self-interacting dark matter
Moritz S. Fischer, Laura Sagunski
Context. Merging compact objects such as binary black holes provide a promising probe for the physics of dark matter (DM). The gravitational waves emitted during inspiral potential…
Dianoga SIDM: galaxy cluster self-interacting dark matter simulations
Antonio Ragagnin, Massimo Meneghetti, Francesco Calura +5
This work aims at assessing the impact of DM self-interactions on the properties of galaxy clusters. In particular, the goal is to study the angular dependence of the cross section…
Numerical challenges for energy conservation in N-body simulations of collapsing self-interacting dark matter halos
Moritz S. Fischer, Klaus Dolag, Hai-Bo Yu
Dark matter (DM) halos can be subject to gravothermal collapse if the DM is not collisionless, but engaged in strong self-interactions. When the scattering can efficiently transfer…
Simulations of galaxy cluster mergers with velocity-dependent, rare and frequent self-interactions
V. M. Sabarish, Marcus Brüggen, Kai Schmidt-Hoberg +2
Self-interacting dark matter (SIDM) has been proposed to solve small-scale problems in CDM cosmology. In previous work, constraints on the self-interaction cross-section of dark…
Cosmological and idealized simulations of dark matter haloes with velocity-dependent, rare and frequent self-interactions
Moritz S. Fischer, Lenard Kasselmann, Marcus Brüggen +5
Dark matter self-interactions may have the capability to solve or at least mitigate small-scale problems of the cosmological standard model, Lambda Cold Dark Matter. There are a va…
A quantitative comparison between velocity dependent SIDM cross sections constrained by the gravothermal and isothermal models
Shengqi Yang, Fangzhou Jiang, Andrew Benson +6
One necessary step for probing the nature of self-interacting dark matter (SIDM) particles with astrophysical observations is to pin down any possible velocity dependence in the SI…
The role of baryons in self-interacting dark matter mergers
Moritz S. Fischer, Nils-Henrik Durke, Katharina Hollingshausen +3
Mergers of galaxy clusters are promising probes of dark matter (DM) physics. For example, an offset between the DM component and the galaxy distribution can constrain DM self-inter…
Sensitivity of Halo Shape Measurements
Moritz S. Fischer, Lucas M. Valenzuela
Shape measurements of galaxies and galaxy clusters are widespread in the analysis of cosmological simulations. But the limitations of those measurements have been poorly investigat…
Cosmological simulations with rare and frequent dark matter self-interactions
Moritz S. Fischer, Marcus Brüggen, Kai Schmidt-Hoberg +4
Dark matter (DM) with self-interactions is a promising solution for the small-scale problems of the standard cosmological model. Here we perform the first cosmological simulation o…
Unequal-mass mergers of dark matter haloes with rare and frequent self-interactions
Moritz S. Fischer, Marcus Brüggen, Kai Schmidt-Hoberg +3
Dark matter (DM) self-interactions have been proposed to solve problems on small length scales within the standard cold DM cosmology. Here, we investigate the effects of DM self-in…