52 citations · 64 across the 12 of their papers we have counts for
12 papers
Peculiar dark matter halos inferred from gravitational lensing as a manifestation of modified gravity
Michal Bílek
If modified gravity holds, but the weak lensing analysis is done in the standard way, one finds that dark matter halos have peculiar shapes, not following the standard Navarro-Fren…
A closer look at the extended edge-on low-surface brightness galaxies
Anna S. Saburova, Damir Gasymov, Evgenii V. Rubtsov +13
To understand the origin of extended disks of low-surface brightness (LSB) galaxies, we studied in detail 4 such systems with large disks seen edge-on. Two of them are edge-on gian…
Globular cluster orbital decay in dwarf galaxies with MOND and CDM: Impact of supernova feedback
M. Bílek, F. Combes, S. T. Nagesh +1
Dynamical friction works very differently for Newtonian gravity with dark matter and in modified Newtonian dynamics (MOND). While the absence of dark matter considerably reduces th…
Simulations of cluster ultra-diffuse galaxies in MOND
Srikanth T. Nagesh, Jonathan Freundlich, Benoit Famaey +4
Ultra-diffuse galaxies (UDGs) in the Coma cluster have velocity dispersion profiles that are in full agreement with the predictions of Modified Newtonian Dynamics (MOND) in isolati…
Deep imaging with Milanković telescope: Linking merger history to kinematics of elliptical galaxies
Ivana Ebrová, Michal Bílek, Ana Lalović +4
Kinematical and morphological features observed in early-type galaxies provide valuable insights into the evolution of their hosts. We studied the origin of prolate rotation (i.e.,…
The galactic acceleration scale is imprinted on globular cluster systems of early-type galaxies of most masses and on red and blue globular cluster subpopulations
Michal Bílek, Michael Hilker, Florent Renaud +3
Context. Globular clusters (GCs) carry information about the formation histories and gravitational fields of their host galaxies. Bílek et al. (2019, BSR19 hereafter) reported that…
Do old globular clusters in low mass galaxies disprove modified gravity?
Michal Bílek, Hongsheng Zhao, Benoit Famaey +6
The controversy "dark matter vs. modified gravity" constitutes a major topic of discussion. It was proposed that dynamical friction could be used to discriminate between the two al…
Origin of the differences in rotational support among early-type galaxies: The case of galaxies outside clusters
Michal Bílek, Pierre-Alain Duc, Elisabeth Sola
Context: Early-type galaxies (ETGs) are divided into slow and fast rotators (FRs and SRs) according to the degree of ordered rotation of their stellar populations. Cosmological hyd…
Characterization of Low Surface Brightness structures in annotated deep images
Elisabeth Sola, Pierre-Alain Duc, Felix Richards +7
The characterization of Low Surface Brightness (LSB) stellar structures around galaxies such as tidal debris of on-going or past collisions is essential to constrain models of gala…
Are disks of satellites comprised of tidal dwarf galaxies?
Michal Bílek, Ingo Thies, Pavel Kroupa +1
It was found that satellites of nearby galaxies can form flattened co-rotating structures called disks of satellites or planes of satellites. Their existence is not expected by the…
Origin of the spectacular tidal shells of galaxy NGC474
Michal Bílek, Jérémy Fensch, Ivana Ebrová +4
The lenticular galaxy NGC474 hosts a rich system of tidal shells and streams, some of which are exceptionally bright. Two teams recently presented spectroscopic observations of the…
Evolution of globular-cluster systems of ultra-diffuse galaxies due to dynamical friction in MOND gravity
Michal Bílek, Hongsheng Zhao, Benoit Famaey +3
(Abridged) Dynamical friction can be used to distinguish Newtonian gravity and modified Newtonian dynamics (MOND) because it works differently in these frameworks. This concept, ho…