View Full Version : Dark Stars?

man on the moon
2007-Dec-08, 06:02 PM
Before you ask this to be moved to ATM, take a look here (http://www.sciam.com/podcast/episode.cfm?id=B1818228-E7F2-99DF-3AB1BC08601ACFE6). It makes sense it doesn't make sense at the same time. Can anyone expand on this?

I think it's a podcast as well, I wonder if I could get it to play on my computer...hmm. (No Ipod yet, I'm still in the bronze age. Though I do have Vista for whatever good that is.)

man on the moon
2007-Dec-08, 06:10 PM
Argh, when I clicked to post a page for typing a new post popped up, so I thought it hadn't gone through. By then I'd read the referenced page again and changed a bit in the second post. Feel free to delete or ignore this one.

2007-Dec-08, 06:27 PM
The article states:

No one knows what dark matter is composed of, so the scientists decided to go with a candidate called the neutralino. They think that neutralino interactions inside the first stars would have kept them bloated—big enough to engulf today’s solar systems.
This scenario seems odd since most discussions of dark matter I've heard of - including the neutralino - contemplate that the dark matter does not interact, or just barely interacts, with normal particles... except gravitationally, of course. So what interactions are these authors talking about?

2007-Dec-08, 07:30 PM
So what interactions are these authors talking about?

Could it be neutralino-neutralino interactions?

NASA: Beyond Einstein: Before Stars, Dark Matter Haloes were First Objects in the Early Universe (http://universe.nasa.gov/press/2005/050201b.html)

"Detection of these neutralino haloes is difficult but possible", the team said. The halos are constantly emitting gamma rays, the highest-energy form of light, which are produced when neutralinos collide and self-annihilate.

man on the moon
2007-Dec-08, 07:32 PM
I was To Seeked (http://www.bautforum.com/astronomy/67855-dark-stars-may-have-populated-early-universe.html).

Go there.

2007-Dec-08, 09:00 PM
The SciAm clearly wasn't there.

"Dark Star", song by Grateful Dead, first recorded 1977.
"Dark Star", film by John Carpenter, made 1974.

John the Anorak.