The basic physics of the binary black hole merger GW150914

LIGO Scientific Collaboration, Virgo Collaboration

Research output: Contribution to journalArticleAcademicpeer-review

56 Citations (Web of Science)

Abstract

The first direct gravitational-wave detection was made by the Advanced Laser Interferometer Gravitational Wave Observatory on September 14, 2015. The GW150914 signal was strong enough to be apparent, without using any waveform model, in the filtered detector strain data. Here, features of the signal visible in the data are analyzed using concepts from Newtonian physics and general relativity, accessible to anyone with a general physics background. The simple analysis presented here is consistent with the fully general-relativistic analyses published elsewhere, in showing that the signal was produced by the inspiral and subsequent merger of two black holes. The black holes were each of approximately 35M(circle dot), still orbited each other as close as similar to 350 km apart and subsequently merged to form a single black hole. Similar reasoning, directly from the data, is used to roughly estimate how far these black holes were from the Earth, and the energy that they radiated in gravitational waves.
Original languageEnglish
Article number1600209
Number of pages17
JournalAnnalen der Physik
Volume529
Issue number1-2
DOIs
Publication statusPublished - 1 Jan 2017
Externally publishedYes

Keywords

  • GRAVITATIONAL-RADIATION
  • MAXIMUM MASS
  • PULSAR
  • WAVES

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