Speaker
Kazuya Kobayashi
Description
Parameter estimation and population inference for binary black holes from gravitational-wave data are limited by observational uncertainties. In particular, spin parameters—crucial for understanding the formation channels of binary black holes—remain more weakly constrained than other parameters, making it difficult to draw conclusive conclusions.
The large uncertainty in spin estimation makes inferred results highly sensitive to prior choices. To obtain more robust conclusions, we adopt a uniform prior on the effective spin, which is relatively well constrained by gravitational-wave data. We further evaluate the occurrence probability of events under assumed population models to constrain the formation channels of binary black holes.
Primary authors
Kazuya Kobayashi
Kenta Hotokezaka
Soichiro Morisaki
Tomoya Kinugawa
