The first direct gravitational-wave detection was made bythe Advanced Laser Interferometer Gravitational Wave Ob-servatory on September 14, 2015. The GW150914 signal wasstrong enough to be apparent, without using any wave-form model, in the ltered detector strain data. Here, fea-tures of the signal visible in the data are analyzed usingconcepts from Newtonian physics and general relativity, ac-cessible to anyone with a general physics background. Thesimple analysis presented here is consistent with the fullygeneral-relativistic analyses published elsewhere, in show-ing that the signal was produced by the inspiral and subse-quent merger of two black holes. The black holes were eachof approximately 35 M⊙, still orbited each other as close as∼350 km apart and subsequently merged to form a singleblack hole. Similar reasoning, directly from the data, is usedto roughly estimate how far these black holes were fromthe Earth, and the energy that they radiated in gravitationalwaves

The basic physics of the binary black hole merger GW150914 / Abbott, B.P., Abbott, R., Abbott, T.D., Abernathy, M.R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: ANNALEN DER PHYSIK. - ISSN 0003-3804. - STAMPA. - 529:1-2(2017), p. 1600209. [10.1002/andp.201600209]

The basic physics of the binary black hole merger GW150914

ASTONE, PIA;CASENTINI, CLAUDIO;COLLA, ALBERTO;CONTE, ANDREA;Drago, M.;FRASCA, Sergio;LEACI, PAOLA;MAJORANA, ETTORE;MANGANO, VALENTINA;MASTROGIOVANNI, SIMONE;MEZZANI, FEDERICA;NARDECCHIA, ILARIA;NATICCHIONI, LUCA;Pannarale, F.;PICCINNI, ORNELLA JULIANA;RAPAGNANI, Piero;RICCI, Fulvio;Salemi, F.;Giovanni, M. Di
2017

Abstract

The first direct gravitational-wave detection was made bythe Advanced Laser Interferometer Gravitational Wave Ob-servatory on September 14, 2015. The GW150914 signal wasstrong enough to be apparent, without using any wave-form model, in the ltered detector strain data. Here, fea-tures of the signal visible in the data are analyzed usingconcepts from Newtonian physics and general relativity, ac-cessible to anyone with a general physics background. Thesimple analysis presented here is consistent with the fullygeneral-relativistic analyses published elsewhere, in show-ing that the signal was produced by the inspiral and subse-quent merger of two black holes. The black holes were eachof approximately 35 M⊙, still orbited each other as close as∼350 km apart and subsequently merged to form a singleblack hole. Similar reasoning, directly from the data, is usedto roughly estimate how far these black holes were fromthe Earth, and the energy that they radiated in gravitationalwaves
2017
black holes; gravitational waves; GW150914; Physics and Astronomy (all)
black holes; gravitational waves; GW150914; Physics and Astronomy (all)
01 Pubblicazione su rivista::01a Articolo in rivista
The basic physics of the binary black hole merger GW150914 / Abbott, B.P., Abbott, R., Abbott, T.D., Abernathy, M.R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: ANNALEN DER PHYSIK. - ISSN 0003-3804. - STAMPA. - 529:1-2(2017), p. 1600209. [10.1002/andp.201600209]
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