Physics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..may..e901w&link_type=abstract
American Physical Society, APS/AAPT Joint Meeting, May 2-5, 1996, abstract #E9.01
Physics
Scientific paper
The sensitivity achievable by the Laser Interferometer Space Antenna (LISA) will be discussed (see also abstracts by Stebbins et al and by Bender and Hils). Below about 1 mHz, the sensitivity will be limited mainly by spurious accelerations of the proof mass in each spacecraft and by a random superposition of signals from many short period galactic binaries. At higher frequencies, the main limitations will come from shot noise in determining the difference in length of the interferometer arms and from fluctuations in the pointing of the laser beams. Hundreds to thousands of galactic binaries resolved in frequency and direction will be detectable throughout the galaxy. A few known sources will be included. One possible type of source is black hole-massive black hole (BH-MBH) binaries, with periapsis speeds of about half the speed of light, very rapidly precessing elliptical orbits, and possible fast orbit plane precession around Kerr MBHs. The observation of such signals or of those from MBH-MBH binaries would permit extremely strong tests of the dynamical predictions of general relativity.
Bender Peter
Faller James E.
Stebbins Robin Tuck
Ward Harry
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