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(Paper) Evidence of a Jovian Mass Solar Companion in the Oort Cloud?
Paolo
post Apr 27 2010, 05:07 AM
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... a new confirmation of the "Nemesis" theory Persistent Evidence of a Jovian Mass Solar Companion in the Oort Cloud


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Greg Hullender
post Apr 27 2010, 04:07 PM
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Some interesting points (this thing is over 40 pages long!)

1) They reject the "Nemesis" concept, saying the object couldn't cause "comet storms."
2) They want to name it "Tyche" for the good sister of Nemesis.
3) They're talking 1-4 MJ at 10,000 to 30,000 AU; to put that in perspective, note that even a probe like NH would take thousands of years get there.
4) It's inclined 133 degrees to the ecliptic, but they think the orbit's circular.
5) Depending on assumptions, they give as much as a 50% chance that this is an illusion caused by randomness in the observations.

Within year, WISE will know. Gives us something to anticipate though.

--Greg
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Vultur
post Apr 28 2010, 08:29 PM
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I hope this works out, and that WISE finds the object .. but can it? I remember reading that WISE couldn't find an Earth-size body at Kuiper belt (or was it Oort cloud?) temperatures. At that distance from the Sun, it'll be *really* cold ... but at Jupiter-mass plus, it should produce a significant amount of internal heat.

'Tyche' is a clever name.

QUOTE (Greg Hullender @ Apr 27 2010, 05:07 PM) *
3) They're talking 1-4 MJ at 10,000 to 30,000 AU; to put that in perspective, note that even a probe like NH would take thousands of years get there.


Yeah, if it exists, it'll take a new generation of propulsion technologies to get there in anything resembling a reasonable time. Presuming 20,000 AU, to get there in twenty years would require an average speed of 4740 km/s.
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Greg Hullender
post Apr 28 2010, 09:26 PM
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QUOTE (Vultur @ Apr 28 2010, 12:29 PM) *
Presuming 20,000 AU, to get there in twenty years would require an average speed of 4740 km/s.

Note that 10,000 AU is about two light-months, and 30,000 AU is about half a light-year.

We're talking really, really far here.

--Greg
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Posts in this topic
- Paolo   (Paper) Evidence of a Jovian Mass Solar Companion in the Oort Cloud?   Apr 27 2010, 05:07 AM
- - ngunn   Much appreciated, thanks. Best of all the full art...   Apr 27 2010, 07:45 AM
- - Hungry4info   I think calling it a "confirmation" is g...   Apr 27 2010, 10:35 AM
|- - Paolo   QUOTE (Hungry4info @ Apr 27 2010, 12:35 P...   Apr 27 2010, 04:57 PM
- - Phil Stooke   This certainly can't be called a confirmation,...   Apr 27 2010, 12:02 PM
- - Greg Hullender   Some interesting points (this thing is over 40 pag...   Apr 27 2010, 04:07 PM
|- - stewjack   QUOTE (Greg Hullender @ Apr 27 2010, 11:0...   Apr 27 2010, 05:09 PM
||- - tedstryk   Yeah, why in the world would they use math in tryi...   Apr 27 2010, 06:07 PM
||- - stevesliva   QUOTE (tedstryk @ Apr 27 2010, 02:07 PM) ...   Apr 27 2010, 08:51 PM
|- - Vultur   I hope this works out, and that WISE finds the obj...   Apr 28 2010, 08:29 PM
|- - Greg Hullender   QUOTE (Vultur @ Apr 28 2010, 12:29 PM) Pr...   Apr 28 2010, 09:26 PM
- - ngunn   Whether this object exists or not there is plenty ...   Apr 27 2010, 10:46 PM
- - nprev   The merits of math aside, statistical inference is...   Apr 27 2010, 10:47 PM
- - alan   This paper reminds me of an article I read in Sky ...   Apr 28 2010, 12:49 AM
- - Phil Stooke   I was assuming that IR surveys - going right back ...   Apr 28 2010, 01:15 AM
- - nprev   They do mention IRAS, and sort of artfully adjust ...   Apr 28 2010, 02:37 AM
- - Stu   Great, something ELSE to add on to our Solar Syste...   Apr 29 2010, 05:34 AM
|- - PFK   QUOTE (Stu @ Apr 29 2010, 06:34 AM) Great...   Apr 29 2010, 09:16 AM
- - Stu   Brilliant! Thanks PFK, you just scribbled one ...   Apr 29 2010, 02:22 PM
- - Big_Gazza   Not wanting to inject controversy into this thread...   Apr 29 2010, 11:57 PM
- - brellis   Wouldn't Jupiter have to be upgraded to ...   Apr 30 2010, 12:15 AM
- - Hungry4info   I interpret the rule to mean that the object has t...   Apr 30 2010, 12:42 AM
- - Vultur   What is the total mass of the Oort Cloud? I'm ...   Apr 30 2010, 02:05 AM
- - nprev   I wouldn't be surprised it's vastly less t...   Apr 30 2010, 02:12 AM
- - Greg Hullender   I see it estimated anywhere from 40 Earth masses t...   Apr 30 2010, 02:31 AM
- - brellis   It gets a little confusing to hear about the Voyag...   Oct 2 2010, 02:38 AM
- - dmuller   What's the Hillsphere of the Sun?   Oct 2 2010, 07:37 AM
|- - centsworth_II   QUOTE (dmuller @ Oct 2 2010, 02:37 AM) Wh...   Oct 2 2010, 08:00 AM
- - nprev   I was going to ask why the radius of the Sun's...   Oct 2 2010, 08:42 AM
|- - dmuller   QUOTE (nprev @ Oct 2 2010, 06:42 PM) Sinc...   Oct 4 2010, 11:41 PM
- - centsworth_II   Looking back to the previous page (621) to the pag...   Oct 2 2010, 08:57 AM
- - centsworth_II   Flurry of tweets at #dps2010: "Hal Levison p...   Oct 4 2010, 06:57 PM
- - brellis   Is there a way to measure the 'wobble' of ...   Oct 4 2010, 11:49 PM
- - Lunik9   Interesting Tyche theory but different with the Ne...   Oct 5 2010, 11:27 AM
|- - Greg Hullender   QUOTE (Lunik9 @ Oct 5 2010, 03:27 AM) Int...   Oct 5 2010, 04:08 PM
- - qraal   Another paper available on the arXiv which is germ...   Dec 22 2010, 09:55 AM
- - kap   QUOTE (qraal @ Dec 22 2010, 01:55 AM) Ano...   Jul 25 2011, 09:57 PM


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