In the Dark

5 Responses to “Cat Curling”

1. 

   Shantanu Says:
   February 18, 2014 at 1:18 pm

   Peter, an OT question/comment. Would be very interested in your opinions on what could be the explanation of Fig 1 of http://arxiv.org/abs/1401.1146
   Surely this is beyond anything predicted by CDM (or its variants).
   Thanks
   shantanu

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   • 

     telescoper Says:
     February 18, 2014 at 1:26 pm

     Not exactly relevant to this post…

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2. 

   Shantanu Says:
   February 18, 2014 at 4:51 pm

   yes, apologies for that. but just curious about what you think about this paper/plot (as I haven’t seen a discussion of this intriguing paper on any blog/forum)
   Hence thought if asking about it in some post.

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     Shantanu Says:
     February 20, 2014 at 6:33 pm

     Philip, I am aware of this constancy of acceleration in variety of systems in MOND literature (see eg fig. 4 of 0806.2585) However these authors don’t work on MOND and have done more precise measurements.

     Anyhow from talking to people who work on Lambda CDM or its variants) they are not aware of this constancy of acceleration (either before or after the Loeb/Walker paper) and hence wanted to draw attention about this to see if people at least have speculations on what could be going on.

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3. 

   Shantanu Says:
   February 25, 2014 at 4:14 pm

   Philip,
   by lambda-cdm I meant people who believe in dark matter and always assume NFW profiles.
   anyhow most of them are unaware of these observational regularities. In fact 2 years ago, I heard a standard talk on particle dark matter by Rocky Kolb and I asked him about Tully -Fisher relation and he was dismissive of it (even though it is an established observational fact since 70s
   his reply was “fishy tully relation” 🙂

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