QPOs

—quasi-periodic oscillations, x-ray pulses from compact objects

ROSAT

—Roentgen Satellite (German-U.S.-U.K. collaboration)

RXTE

—Rossi X-ray Timing Explorer

SAO

—Smithsonian Astrophysical Observatory

SIM

—Space Interferometry Mission

STScI

—Space Telescope Science Institute

ULDB

—ultralong-duration balloon

VERITAS

—Very Energetic Radiation Imaging Telescope Array System

VLBI

—very long baseline interferometry

XMM-Newton

—X-ray Multi-Mirror Observatory, a European collaboration x-ray space mission



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement