A Space & astronomy forum. SpaceBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

Post New Thread
Threads in Forum : Research Forum Tools Search this Forum Feed Icon
  Thread / Thread Starter Last Post Reverse Sort Order Replies Views
Cosmological Simulations: Illustris Or Illusion? by Robert L. Oldershaw
Cosmological simulations can be quite useful. They can lead to definitive predictions by which one can test our cosmological knowledge. A nice case in point...
(Multi-page thread 1 2)
June 2nd 14 02:01 PM
by Jos Bergervoet Go to last post
16 795
Peebles and Galaxy Formation by Robert L. Oldershaw
Recently the issue of how well we understand galaxy formation came up at SAR and Dr Helbig said our understanding was quite good. Here is a quotation by PJE...
June 1st 14 06:58 AM
by Robert L. Oldershaw Go to last post
8 506
Is it possible? by David Staup[_2_]
Is it possible that Dark Matter is repulsive to itself (by whatever mechanism) while being attracted (by gravity) to normal matter? It seems to me that that...
(Multi-page thread 1 2)
May 25th 14 08:29 AM
by Phillip Helbig---undress to reply Go to last post
11 581
Uh, Oh: BICEP2 Results In Jeopardy? by Martin Hardcastle
In article , Robert L. Oldershaw wrote: (1) Are you aware of how many papers were posted...
May 17th 14 09:08 AM
by Martin Hardcastle Go to last post
0 506
Gravitational Lensing and the search for Dark Matter by AM[_3_]
Can someone point me to a good explanation of this method ? I.e. by analysing lensing effects in a galaxy cluster, it is possible to map the distribution of DM...
May 5th 14 06:57 AM
by Richard D. Saam Go to last post
4 404
Cold planet/brown dwarf discovered by jacob navia[_5_]
"It is remarkable that even after many decades of studying the sky, we still do not have a complete inventory of the sun's nearest...
April 26th 14 11:58 AM
by Jos Bergervoet Go to last post
1 399
Dark Matter Issue by Richard D. Saam
In addition to the extended gamma-ray excess from the Galactic center region being modeled as Annihilating Dark Matter: http://arxiv.org/abs/1402.6703 there is...
April 26th 14 11:56 AM
by Richard D. Saam Go to last post
0 413
Status of the Big Bang Cosmology by Robert L. Oldershaw
On Wednesday, April 16, 2014 5:19:21 PM UTC-4, Phillip Helbig---undress to reply wrote: For example, in the 1980s there were serious problems like ...
April 26th 14 09:13 AM
by Robert L. Oldershaw Go to last post
5 488
Status of the Big Bang Cosmology by Robert L. Oldershaw
On Wednesday, April 16, 2014 5:25:34 AM UTC-4, Phillip Helbig---undress to reply wrote: But in the case of MACHOs, obervations were done which would have...
April 21st 14 09:25 AM
by Phillip Helbig---undress to reply Go to last post
1 483
Gravitational Scalar & Redshift Distortion by Eric Flesch
This is just a timely reminder the the terms "Dark Matter" and "Dark Energy" are confusing astronomers. I keep up with ArXiv and I find it amazing that so...
(Multi-page thread 1 2 3 ... Last Page)
April 11th 14 03:14 PM
by Richard D. Saam Go to last post
41 1,756
CfA Colloquia by Steve Willner
Our weekly (during the academic year) colloquia are now available to the public at https://www.youtube.com/channel/UCApHNlZLkxmiV95A0ChueYg This week's by...
April 11th 14 03:13 PM
by Steve Willner Go to last post
2 477
Beck: axion mass estimates from resonant Josephson junctions by Jos Bergervoet
In his very interesting most recent paper, Beck reports again about the 110ueV axion detection in Josephson junctions: http://arxiv.org/abs/1403.5676 and...
April 4th 14 01:16 PM
by Phillip Helbig---undress to reply Go to last post
3 487
Big bang confirmed? by jacob navia[_5_]
Much has been written about the "ripples in spacetime", etc. Big Bang theorist are very happywith the new "confirmation" of gravitational waves in the CMB...
April 3rd 14 07:27 AM
by Steve Willner Go to last post
4 491
A steady-state model of the universe by Albert Einstein by Nicolaas Vroom
For a copy of this document select this: http://arxiv.org/abs/1402.0132 IMO the most interesting part are the following sentences: In the final part of the...
April 3rd 14 07:27 AM
by Phillip Helbig---undress to reply Go to last post
6 521
Nature 3/5/14: Bold New Strategy In Dark Matter Search? by Robert L. Oldershaw
I note that Livio's and Silk's Nature Comment on dark matter candidates is exclusively devoted to dark matter composed of ad hoc and purely speculative...
March 22nd 14 08:43 AM
by Nicolaas Vroom Go to last post
2 435
?Ratio of dark to luminous mass inside solar circle Ro? by Steve Willner
In article , stargene writes: But when I recently checked some sources, eg: wikipedia's ...
March 18th 14 07:38 AM
by Steve Willner Go to last post
0 427
old galaxies in a supposedly young universe by jacob navia[_5_]
At z=4 (1.6Gy after the supposed bang) we see old galaxies that have stopped their star formation since a long...
March 17th 14 08:02 AM
by Craig Markwardt[_2_] Go to last post
6 444
Moon tidal locking inevitable by now? by [email protected]
Hi! I wasn't sure whether to start a new thread or tease this one out a bit. I am not a mathematician nor an astronomer, just a layman trying to figure this...
March 5th 14 08:29 PM
by Eric Flesch Go to last post
3 554
Cosmography of the local Universe by Nicolaas Vroom
The video "Cosmography of the local Universe" gives a very impressive view of the positions and peculiar velocities in the neighborhood of the Milky way. See...
March 3rd 14 10:33 PM
by Nicolaas Vroom Go to last post
8 616
Relativistic integration by Frank Sorensen
Hi All, I have written a program to integrate motion paths of charged relativistic particles in a stationary electric field, and I have run into a (rather...
February 21st 14 02:14 PM
by [email protected] Go to last post
1 589
Post New Thread


Display Options
Showing threads 201 to 220 of 1533
Sorted By Sort Order
From The
Forum Tools Search this Forum
Search this Forum :

Advanced Search

New posts New posts More than 15 replies or 150 views Hot thread with new posts
No new posts No new posts More than 15 replies or 150 views Hot thread with no new posts
Closed Thread Thread is closed  
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 06:45 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 SpaceBanter.com.
The comments are property of their posters.