M4: Chandra locates X-ray sources and binaries

[M4 in X-rays, CXO]

Globular clusters M4 and NGC 6397 have got their central parts imaged by Chandra X-ray Observatory, among a total of 13 Milky Way Globular Clusters. Astronomers found that contrary to expectation, denser M4, with its higher rate of stellar encounters, has less binaries and hot X-ray sources than less dense NGC 6397.

Credit: NASA/CXC/Northwestern Univ/John Fregeau

Chandra image:

Chandra Press Release (April 28, 2008):

SEDS M4 page:


Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: