skip to content
ASCA Guest Observer Facility

ASCA Science Highlights: Surveys

Follow the links to images and plots

Some ASCA observations are not of specific objects, but of specific areas of the sky to see what kind of X-ray emitting objects may be found. Although ASCA is not the first instrument used for an X-ray survey by any means, it has extended imaging X-ray surveys to a higher energy range (up to 10 keV) than ever before.
  • We live in a spiral (perhaps a barred-spiral) galaxy. By observing the Galactic plane, therefore, we can observe a large number of interesting objects that are often obscured by intervening gas and dust. The hard X-ray sensitivity of ASCA (which is less susceptible to interstellar absorption) is one way of getting around this. The ASCA Galactic Plane Survey has uncovered many interesting X-ray sources so far.
  • Outside our own Galaxy, ASCA has enabled discoveries of heavily obscured active galaxies such as NGC 6552.

This page created by Dr. Koji Mukai (USRA) at the U.S. ASCA Guest Observer Facility.

This file was last modified on Tuesday, 29-May-2001 11:57:20 EDT
Curator: Michael Arida (SP Sys);
HEASARC Guest Observer Facility

If you have any questions concerning ASCA, visit our Feedback form.

This file was last modified on Tuesday, 29-May-2001 11:57:20 EDT

NASA Astrophysics

  • FAQ/Comments/Feedback
  • Education Resources
  • Download Adobe Acrobat
  • A service of the Astrophysics Science Division (ASD) at NASA/ GSFC

    ASCA Project Scientist: Dr. Nicholas E. White

    Responsible NASA Official: Phil Newman

    Privacy Policy and Important Notices.