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Did An 8th Century Gamma Ray Burst Irradiate Earth?
Science Daily ^ | 1-21-2013 | Science Daily

Posted on 01/21/2013 7:50:06 AM PST by blam

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1 posted on 01/21/2013 7:50:19 AM PST by blam
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To: SunkenCiv

It’s Always Something (IAS)


2 posted on 01/21/2013 7:54:03 AM PST by blam
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To: blam

Don’t tell the Global Warming Crazies, then they can’t push their Cap and Trade agenda.


3 posted on 01/21/2013 7:57:09 AM PST by Hotlanta Mike ("Governing a great natiorn is like cooking a small fish - too much handling will spoil it." Lao Tzu)
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To: blam

Sounds like something to do with Islam and the Devil.


4 posted on 01/21/2013 7:58:41 AM PST by Paladin2
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To: blam

The gore-bull warming alarmists fail to realze that the more we learn about the nature of the universe the more powerless in the face of nature we discover we are.

A sufficiently powerful Gamma Ray Buirst would make any perceived “gore-bull” warming look like a nice pleasant day at the beach for life on earth.


5 posted on 01/21/2013 8:00:07 AM PST by GraceG
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To: blam

See what posting an interesting article gets you? Crap comments about global warming and islam.


6 posted on 01/21/2013 8:02:24 AM PST by chessplayer
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To: blam

N14 goes to C14 under neutron irradiation, and I thought the neutrons came from solar protons and some galactic cosmic ray interactions.

Would a gamma burst (photons) generate enough neutrons to increase C14 from N14 or O17?

I think a good alternative would be a series of extremely large solar flares.


7 posted on 01/21/2013 8:04:26 AM PST by DBrow
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To: chessplayer

You are only playing tic-tac-toe on this thread.


8 posted on 01/21/2013 8:06:43 AM PST by Paladin2
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To: Paladin2

C’mon, tell us. Maybe the commies or hippies did it.


9 posted on 01/21/2013 8:09:30 AM PST by chessplayer
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To: chessplayer

Just the Galactic Empire dropping off another load of thetans...


10 posted on 01/21/2013 8:12:23 AM PST by Buckeye McFrog
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To: Buckeye McFrog

So Dr. Evil went back in time to affect the outcome of the Battle of Berztia?


11 posted on 01/21/2013 8:16:38 AM PST by massgopguy (I owe everything to George Bailey)
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To: blam

“Hulk smash puny gamma ray!!!”


12 posted on 01/21/2013 8:20:31 AM PST by Sideshow Bob
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To: blam
A nearby short duration gamma-ray burst may be the cause...
IOW, a WAG.
13 posted on 01/21/2013 8:25:24 AM PST by Bratch
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To: blam; SunkenCiv
This "scientific article" is very incomplete. I can find no data demonstrating the obvious fact that those gamma ray bursts were the fault of George W. Bush. Neither do I see any indication of the incontrovertible truth that these heartless capitalist gamma ray bursts cause the most lasting harm to women, children, members of federally recognized racial minorities, or gays, lesbians, and the transgendered.

I therefore must reject the implications of this article. The work was done at the University of Jena, which as everyone knows was visited by prominent NAZI Party officials.

14 posted on 01/21/2013 8:28:54 AM PST by Kenny Bunk (Say, what the hell happened to Reggie Love? Who's in the playroom with Barry now?)
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To: DBrow

I believe neutrons can also come from “star formation” which occurs when a nucleus is hit by a gamma photon having more energy than the binding energy of said nucleus. The nucleus blows up (leaving a star pattern on cloud-chamber photographs, hence the name) and not shown on those photographs, some of the remnants are neutrons. This only happens at gamma energies well above 5 or 10 MeV. Even if the gammas didn’t penetrate far into the atmosphere, they wouldn’t need to as there are nitrogens up there, and anyway the neutrons can penetrate.


15 posted on 01/21/2013 8:31:50 AM PST by coloradan (The US has become a banana republic, except without the bananas - or the republic.)
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To: blam

If that happened, science also tells us we would all have super powers.

So I am saying no.


16 posted on 01/21/2013 8:32:37 AM PST by freedumb2003 (lib "think": My bumper sticker didn't go into details about that!)
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To: coloradan

Then again, maybe the Vikings had nuclear weapons. (Which is why they were so feared.)


17 posted on 01/21/2013 8:34:42 AM PST by coloradan (The US has become a banana republic, except without the bananas - or the republic.)
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To: Sideshow Bob
Really? It took until the 12th post for anyone to make a Hulk Smash reference?
18 posted on 01/21/2013 8:38:17 AM PST by Tanniker Smith (Rome didn't fall in a day, either.)
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To: blam
I was watching the Universe (on the science channel) and they indicated that at least one star is pointed at the Earth with the power to send a gamma ray burst when it goes nova.
19 posted on 01/21/2013 8:45:31 AM PST by 2001convSVT (Going Galt as fast as I can.)
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To: Paladin2

The companion paper seems to indicate that the phototonic gammaization inhibited istropoic nucleazation. It was the nucleazation reaction that was needed to restrict the catalyzation to C14.

The trees don’t really realize the change and thus the presence in the very isolated rings.

Three D chess


20 posted on 01/21/2013 8:55:18 AM PST by bert ((K.E. N.P. N.C. +12 .....The fairest Deduction to be reduced is the Standard Deduction)
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To: coloradan

Also called spallation. I have seen spallation at the HERMESIII accelerator, but usually with a high-Z target. Not much from Al, plenty from W.

It’s a possibility to get n from high energy photons, but the lower the Z, the smaller the cross section.

I kind of like the suggestion that it was Viking nukes! Or maybe a “natural reactor” like at Gabon that has not been discovered yet.


21 posted on 01/21/2013 9:01:19 AM PST by DBrow
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To: blam

[[Did An 8th Century Gamma Ray Burst Irradiate Earth?]]

After wtinessign the left in action for decades, does this question really need to be posed?


22 posted on 01/21/2013 9:09:41 AM PST by CottShop (Scientific belief does not constitute scientific evidence, nor does it convey scientific knowledge)
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To: chessplayer

yup...These threads (and the space/science threads) used to be fantastic on FR. These days, only the wannabe comediennes show up with the same tired posts.


23 posted on 01/21/2013 9:16:59 AM PST by Michael Barnes (Obamaa+ Downgrade)
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To: bert
The spike is apparently a 1.2% increase found in the "... analysis of the rings of two Japanese cedar trees "

I think more samples from a wider spatially distributed tree sampling is in order before thinking that the sky is falling and we're all going to die (maybe).

24 posted on 01/21/2013 9:17:52 AM PST by Paladin2
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To: Buckeye McFrog
Just the Galactic Empire dropping off another load of thetans...

Damned Zenu.

25 posted on 01/21/2013 9:18:56 AM PST by TangoLimaSierra (To the left the truth looks like Right-Wing extremism.)
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To: chessplayer

I don’t know enough about this kind of science to completely understand how nitrogen plus gamma rays gives you carbon and berryllium. I’m guessing that you get a nitrogen isotope that decays into Carbon 14 which then (or another carbon isotope) decays into berryllium and an alpha particle. I’m sure I’m way off.

Any experts out there?


26 posted on 01/21/2013 9:32:38 AM PST by RadiationRomeo (Step into my mind and glimpse the madness that is me)
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To: Paladin2

That is only the increase in Carbon 14

Beryllium -10 is radioactive with half life of over
1 million years, it would be found by examining ice cores
and picking up the increase in Be-10 for that time


27 posted on 01/21/2013 9:42:35 AM PST by njslim (St)
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To: Tanniker Smith
Really? It took until the 12th post for anyone to make a Hulk Smash reference?

I was kind of shocked, too. Schools just aren't providing an education in the classics anymore.

28 posted on 01/21/2013 9:44:55 AM PST by Sideshow Bob
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To: RadiationRomeo

To answer part of my own question:
14N7 + n = 14C6 + p

(according to wikipedia)


29 posted on 01/21/2013 9:48:38 AM PST by RadiationRomeo (Step into my mind and glimpse the madness that is me)
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To: blam
It ws the beginning of the Little Ice Age which caused Cold Fusion, causing X-RAY`s to splatter all over Italy.

This event is preserved in the Italian oral tradition known as

THE BADA BADA BING.

30 posted on 01/21/2013 9:51:12 AM PST by bunkerhill7 (The Second Amendment has no limits on firepower.)
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To: Kenny Bunk

LOL


31 posted on 01/21/2013 10:58:23 AM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: blam

“If its not one thing its something else” Rozanne Rozannadana


32 posted on 01/21/2013 11:14:10 AM PST by Georgia Girl 2 (The only purpose of a pistol is to fight your way back to the rifle you should never have dropped.)
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Mysterious radiation burst recorded in tree rings
Nature | Sunday, June 3, 2012 | Richard A. Lovett
Posted on Mon Jun 4 13:58:45 2012 by SunkenCiv
http://www.freerepublic.com/focus/chat/2891403/posts

The Cosmic Story of Carbon-14
Starts with a Bang | 6/4/12 | Ethan Siegel
Posted on Tue Jun 5 03:48:06 2012 by LibWhacker
http://www.freerepublic.com/focus/chat/2891641/posts


33 posted on 01/21/2013 11:19:21 AM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: coloradan; DBrow
Your reply got me interested enough to look it up. yes, a high-energy gamma photon can cause neutron ejection: Photoneutron
34 posted on 01/21/2013 11:29:50 AM PST by PapaBear3625 (You don't notice it's a police state until the police come for you.)
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To: PapaBear3625; coloradan

http://www.osti.gov/bridge/servlets/purl/7316590-E86RO8/7316590.pdf

The overall cross section for N14 is about 96 mb, but the threshold is pretty high, 24 MeV.

I guess a gamma ray pulse could do it, but at 24 MeV those photons would penetrate pretty deep, the primaries and secondaries would dose up the surface, I think.

I don’t have access to MCNP right now, that would give a clue.


35 posted on 01/21/2013 11:48:48 AM PST by DBrow
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 GGG managers are SunkenCiv, StayAt HomeMother & Ernest_at_the_Beach
Thanks blam.

Just adding to the catalog, not sending a general distribution.

To all -- please ping me to other topics which are appropriate for the GGG list.


36 posted on 01/21/2013 1:04:42 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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The Cycle of Cosmic Catastrophes: Flood, Fire, and Famine in the History of Civilization The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization

by Richard Firestone,
Allen West, and
Simon Warwick-Smith


37 posted on 01/21/2013 1:06:06 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...

Thanks blam.


38 posted on 01/21/2013 1:06:20 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: DBrow; coloradan; Dead Corpse

I like the idea of Viking Nukes! LOL!


39 posted on 01/21/2013 1:09:20 PM PST by Monkey Face (Did dinosaurs become extinct because of a reptile dysfunction?)
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closely related:

Researcher points to Sun as likely source of eighth-century ‘Charlemagne event’
PhysOrg | 11-20-2012
Posted on Wed Dec 12 08:34:52 2012 by Renfield
http://www.freerepublic.com/focus/chat/2967972/posts


40 posted on 01/21/2013 1:17:20 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: blam
Astronomers could also look for the merged object, a 1200 year old black hole or neutron star 3000-12000 light years from the Sun but without the characteristic gas and dust of a supernova remnant.

Pretty big patch of sky to look in.

41 posted on 01/21/2013 1:30:51 PM PST by The Cajun (Sarah Palin, Mark Levin......Nuff said.)
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It's been ages since a posting of recent adds to the Catastrophism keyword (minus the current topic; sorted newest to oldest):
42 posted on 01/21/2013 2:59:44 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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link only, crap from Plait
http://www.slate.com/blogs/bad_astronomy/2013/01/21/earth_hit_by_a_gamma_ray_burst_did_a_cosmic_blast_hit_us_in_775_ad.html


43 posted on 01/21/2013 4:28:01 PM PST by SunkenCiv (Romney would have been worse, if you're a dumb ass.)
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To: SunkenCiv
"...the Universe is a dangerous place...."

Yep, be careful out there.

44 posted on 01/21/2013 4:58:15 PM PST by Paladin2
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To: DBrow

I thought spallation was only caused by impact of momentous particles. (That is, not including photons.) You knock a nucleus on the front, and, Newton’s Cradle style, a neutron pops out the back. (Which in any case is different from star formation which completely blows the nucleus apart. )


45 posted on 01/21/2013 6:11:57 PM PST by coloradan (The US has become a banana republic, except without the bananas - or the republic.)
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To: Michael Barnes
yup...These threads (and the space/science threads) used to be fantastic on FR. These days, only the wannabe comediennes show up with the same tired posts.

Agreed. It could be that many of the science experts on FR found science forums to post.

46 posted on 01/21/2013 6:16:50 PM PST by MinorityRepublican
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To: SunkenCiv

SunkenCiv,

How do you manage to have all of those posts saved up?


47 posted on 01/21/2013 6:18:48 PM PST by MinorityRepublican
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To: coloradan

Photons can do it too. With photoneutrons, you get neutrons, with spallation by photons you can get bigger particles. Takes an energetic photon.


48 posted on 01/21/2013 6:39:42 PM PST by DBrow
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To: blam

49 posted on 01/21/2013 6:42:22 PM PST by dfwgator
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To: Sideshow Bob

Ye Hulke Smasheth!


50 posted on 01/21/2013 7:57:34 PM PST by Tanniker Smith (Rome didn't fall in a day, either.)
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