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1. Search for Post-merger Gravitational Waves from the Remnant of the Binary Neutron Star Merger GW170817

   https://doi.org/10.3847/2041-8213/aa9a35  

   Abbott, B. P. ; Abbott, R. ; Abbott, T. D. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adams, T. ; Addesso, P. ; Adhikari, R. X. ; Adya, V. B. ; et al ( December 2017 , The Astrophysical Journal)
2. The basic physics of the binary black hole merger GW150914: The basic physics of the binary black hole merger GW150914

   https://doi.org/10.1002/andp.201600209  

   LIGO Scientific and VIRGO Collaborations ; Abbott, B. P. ; Abbott, R. ; Abbott, T. D. ; Abernathy, M. R. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adams, T. ; Addesso, P. ; et al ( January 2017 , Annalen der Physik)
3. The merger fraction of ultramassive white dwarfs

   https://doi.org/10.1093/mnras/stac3182  

   Kilic, Mukremin ; Moss, Adam G. ; Kosakowski, Alekzander ; Bergeron, P. ; Conly, Annamarie A. ; Brown, Warren R. ; Toonen, Silvia ; Williams, Kurtis A. ; Dufour, P. ( November 2022 , Monthly Notices of the Royal Astronomical Society)

   We search for merger products among the 25 most massive white dwarfs in the Montreal White Dwarf Database 100 pc sample through follow-up spectroscopy and high-cadence photometry. We find an unusually high fraction, 40 per cent, of magnetic white dwarfs among this population. In addition, we identify four outliers in transverse velocity and detect rapid rotation in five objects. Our results show that $56^{+9}_{-10}$ per cent of the $M\approx 1.3\, {\rm M}_{\odot }$ ultramassive white dwarfs form through mergers. This fraction is significantly higher than expected from the default binary population synthesis calculations using the α prescription (with αλ = 2), and provides further support for efficient orbital shrinkage, such as with low values of the common-envelope efficiency.

    

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4. Properties of the Binary Neutron Star Merger GW170817

   https://doi.org/10.1103/PhysRevX.9.011001  

   Abbott, B. P. ; Abbott, R. ; Abbott, T. D. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adams, T. ; Addesso, P. ; Adhikari, R. X. ; Adya, V. B. ; et al ( January 2019 , Physical Review X)
5. The Betelgeuse Project. III. Merger Characteristics

   https://doi.org/10.3847/1538-4357/abc3c9  

   Sullivan, J. M. ; Nance, S. ; Wheeler, J. Craig ( December 2020 , The Astrophysical Journal)

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