Chandra non-detection and heterogeneous RV data leave AzV 493's putative highly eccentric companion unconfirmed, with only L_X < 2.5e33 erg/s and conditional mass lower limits if RV variations are real.
Estimates of black-hole natal kick velocities from observations of low-mass X-ray binaries
2 Pith papers cite this work. Polarity classification is still indexing.
2
Pith papers citing it
abstract
The birth kicks of black holes, arising from asymmetric mass ejection or neutrino emission during core-collapse supernovae, are of great interest for both observationally constraining supernova models and population-synthesis studies of binary evolution. Recently, several efforts were undertaken to estimate black hole birth kicks from observations of black-hole low-mass X-ray binaries. We follow up on this work, specifically focussing on the highest estimated black-hole kick velocities. We find that existing observations do not require black hole birth kicks in excess of approximately 100 km/s, although higher kicks are not ruled out.
years
2026 2representative citing papers
Next-generation IFU instruments could detect core scouring and tangential anisotropy from MBH binaries up to z~0.14 for ~150 pc cores and higher redshifts for larger cores, expanding searchable volume by 30-40 times including lower-mass systems.
citing papers explorer
-
Constraints on Binarity for the Extreme Oe Variable Star AzV 493
Chandra non-detection and heterogeneous RV data leave AzV 493's putative highly eccentric companion unconfirmed, with only L_X < 2.5e33 erg/s and conditional mass lower limits if RV variations are real.
-
Unveiling the properties of galaxy cores excavated by supermassive black hole binaries with SHARP
Next-generation IFU instruments could detect core scouring and tangential anisotropy from MBH binaries up to z~0.14 for ~150 pc cores and higher redshifts for larger cores, expanding searchable volume by 30-40 times including lower-mass systems.