Zobrazeno 1 - 10
of 190
pro vyhledávání: '"A. Olejak"'
Autor:
Banerjee, Sambaran, Olejak, Aleksandra
The ground-based measurement of gravitational waves (GW) from merging binary black holes (BBH) uniquely allows determination of spins of stellar-remnant black holes (BH), thereby offering insights into their formation mechanisms. The observed populat
Externí odkaz:
http://arxiv.org/abs/2411.15112
Autor:
Wang, Chen, Bodensteiner, Julia, Xu, Xiao-Tian, de Mink, Selma E., Langer, Norbert, Laplace, Eva, Vigna-Gómez, Alejandro, Justham, Stephen, Klencki, Jakub, Olejak, Aleksandra, Valli, Ruggero, Schootemeijer, Abel
Massive stars mainly form in close binaries, where their mutual interactions can profoundly alter their evolutionary paths. Evolved binaries consisting of a massive OB-type main-sequence star with a stripped helium star or a compact companion represe
Externí odkaz:
http://arxiv.org/abs/2410.10283
Autor:
Fumagalli, Giulia, Romero-Shaw, Isobel, Gerosa, Davide, De Renzis, Viola, Kritos, Konstantinos, Olejak, Aleksandra
Publikováno v:
Phys. Rev. D 110, 063012 (2024)
Resolving the formation channel(s) of merging binary black holes is a key goal in gravitational-wave astronomy. The orbital eccentricity is believed to be a precious tracer of the underlying formation pathway, but is largely dissipated during the usu
Externí odkaz:
http://arxiv.org/abs/2405.14945
Autor:
Olejak, Aleksandra, Klencki, Jakub, Xu, Xiao-Tian, Wang, Chen, Belczynski, Krzysztof, Lasota, Jean-Pierre
Publikováno v:
A&A 689, A305 (2024)
The growing database of gravitational-wave (GW) detections with the binary black holes (BHs) merging in the distant Universe contains subtle insights into their formation scenarios. One of the puzzling properties of detected GW sources is the possibl
Externí odkaz:
http://arxiv.org/abs/2404.12426
Publikováno v:
A&A, 665 (2022) A111
For binary systems with an unseen primary and a luminous secondary, the astrometric wobble of the secondary could be used to study the primary. With Gaia, it is possible to measure the mass of the black hole or neutron star with a luminous companion
Externí odkaz:
http://arxiv.org/abs/2307.12645
Autor:
Prince, Raj, Zajaček, Michal, Panda, S., Hryniewicz, K., Jaiswal, V. K., Czerny, Bożena, Trzcionkowski, P., Bronikowski, M., Rałowski, M., Figaredo, C. S., Martinez-Aldama, M. L., Śniegowska, M., Średzińska, J., Bilicki, M., Naddaf, M-H, Pandey, A., Haas, M., Sarna, M. J., Pietrzyński, G., Karas, V., Olejak, A., Przyłuski, R., Sefako, R. R., Genade, A., Worters, H. L., Kozłowski, S., Udalski, A.
Publikováno v:
A&A 678, A189 (2023)
We present the wavelength-resolved reverberation mapping (RM) of combined MgII and UV FeII broad-line emissions for two intermediate redshifts (z$\sim$1), luminous quasars - HE 0413-4031 and HE 0435-4312, monitored by the SALT and 1-m class telescope
Externí odkaz:
http://arxiv.org/abs/2304.13763
Properties of the to-date-observed binary black hole (BBH) merger events suggest a preference towards spin-orbit aligned mergers. Naturally, this has caused widespread interest and speculations regrading implications on various merger formation chann
Externí odkaz:
http://arxiv.org/abs/2302.10851
In this work, we investigate the black hole (BH) population of globular clusters (GCs) in Milky Way- (MW) and Andromeda- (M31) like galaxies. We combine the population synthesis code MASinGa and the MOCCA-Survey Database I to infer the properties of
Externí odkaz:
http://arxiv.org/abs/2209.01564
Our understanding of the convective-engine paradigm driving core-collapse supernovae has been used for 2 decades to predict the remnant mass distribution from stellar collapse. These predictions improve as our understanding of this engine increases.
Externí odkaz:
http://arxiv.org/abs/2204.13025
The LIGO-Virgo-KAGRA (LVK) Collaboration has reported nearly 100 BH-BH mergers. The LVK provides estimates of rates, masses, effective spins, and redshifts for these mergers. Yet, the formation channel(s) of the mergers remains uncertain. One way to
Externí odkaz:
http://arxiv.org/abs/2204.11730