Gravitational Wave Detection by Interferometry (Ground and Space)

Area of Science:

• Astronomy and Astrophysics
• Experimental Physics
• Gravitational Wave Astronomy

Background:

• Recent advancements in gravitational-wave detector development are enabling the observation of cosmic phenomena.
• Potential sources include merging compact binaries, neutron stars, stellar collapses, and pulsars.
• Long baseline interferometers, both ground-based and space-borne, are the most promising designs.

Purpose of the Study:

• To review the mechanical and optical principles of current long baseline gravitational-wave detectors.
• To discuss recent scientific runs and astrophysical results from existing detectors.
• To explore future upgrades and next-generation detector concepts.

Main Methods:

• Discussion of mechanical and optical principles in long baseline interferometers.
• Review of operational detectors: LIGO, Virgo, TAMA300, LCGT, GEO600.
• Examination of proposed space-borne interferometer LISA and future Einstein Telescope.

Main Results:

• Current ground-based detectors have completed science runs, yielding astrophysical insights.
• Upcoming upgrades (Advanced LIGO, Advanced Virgo, GEO-HF) will significantly enhance sensitivity.
• Future concepts like the Einstein Telescope aim for further sensitivity improvements.

Conclusions:

• The network of gravitational-wave detectors is rapidly evolving with major upgrades planned.
• These advancements are crucial for detecting a wider range of gravitational waves and exploring the universe.
• Future generations of detectors promise unprecedented sensitivity for groundbreaking discoveries.