TY - JOUR
T1 - Constraints on Neutrino Natal Kicks from Black-Hole Binary VFTS 243
AU - Vigna-Gómez, Alejandro
AU - Willcox, Reinhold
AU - Tamborra, Irene
AU - Mandel, Ilya
AU - Renzo, Mathieu
AU - Wagg, Tom
AU - Janka, Hans Thomas
AU - Kresse, Daniel
AU - Bodensteiner, Julia
AU - Shenar, Tomer
AU - Tauris, Thomas M.
N1 - Publisher Copyright:
© 2024 authors. Published by the American Physical Society.
PY - 2024/5/10
Y1 - 2024/5/10
N2 - The recently reported observation of VFTS 243 is the first example of a massive black-hole binary system with negligible binary interaction following black-hole formation. The black-hole mass (≈10M) and near-circular orbit (e≈0.02) of VFTS 243 suggest that the progenitor star experienced complete collapse, with energy-momentum being lost predominantly through neutrinos. VFTS 243 enables us to constrain the natal kick and neutrino-emission asymmetry during black-hole formation. At 68% confidence level, the natal kick velocity (mass decrement) is 10 km/s (1.0M), with a full probability distribution that peaks when ≈0.3M were ejected, presumably in neutrinos, and the black hole experienced a natal kick of 4 km/s. The neutrino-emission asymmetry is 4%, with best fit values of ∼0-0.2%. Such a small neutrino natal kick accompanying black-hole formation is in agreement with theoretical predictions.
AB - The recently reported observation of VFTS 243 is the first example of a massive black-hole binary system with negligible binary interaction following black-hole formation. The black-hole mass (≈10M) and near-circular orbit (e≈0.02) of VFTS 243 suggest that the progenitor star experienced complete collapse, with energy-momentum being lost predominantly through neutrinos. VFTS 243 enables us to constrain the natal kick and neutrino-emission asymmetry during black-hole formation. At 68% confidence level, the natal kick velocity (mass decrement) is 10 km/s (1.0M), with a full probability distribution that peaks when ≈0.3M were ejected, presumably in neutrinos, and the black hole experienced a natal kick of 4 km/s. The neutrino-emission asymmetry is 4%, with best fit values of ∼0-0.2%. Such a small neutrino natal kick accompanying black-hole formation is in agreement with theoretical predictions.
UR - http://www.scopus.com/inward/record.url?scp=85193300699&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.132.191403
DO - 10.1103/PhysRevLett.132.191403
M3 - Journal article
AN - SCOPUS:85193300699
SN - 0031-9007
VL - 132
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
M1 - 191403
ER -