X-ray Shadowing Experiments Toward Infrared Dark Clouds

Details X-ray Shadowing Experiments Toward Infrared Dark Clouds X-ray Shadowing Experiments Toward Infrared Dark Clouds

2010-08-02

arxiv.org/abs/1008.0416v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Accepted to ApJ

Scientific paper

We searched for X-ray shadowing toward two infrared dark clouds (IRDCs) using the MOS detectors on XMM-Newton to learn about the Galactic distribution of X-ray emitting plasma. IRDCs make ideal X-ray shadowing targets of 3/4 kev photons due to their high column densities, relatively large angular sizes, and known kinematic distances. Here we focus on two clouds near 30 deg. Galactic longitude at distances of 2 and 5 kpc from the Sun. We derive the foreground and background column densities of molecular and atomic gas in the direction of the clouds. We find that the 3/4 kev emission must be distributed throughout the Galactic disk. It is therefore linked to the structure of the cooler material of the ISM, and to the birth of stars.

Affiliated with

Also associated with

No associations

Rating

X-ray Shadowing Experiments Toward Infrared Dark Clouds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with X-ray Shadowing Experiments Toward Infrared Dark Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray Shadowing Experiments Toward Infrared Dark Clouds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-613530