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Neutron star P-Dot

Hi,

I notice you reverted my recent edits on the neutron star page saying they are incorrect. Could you please explain why you think they are wrong?

Jim77742 (talk) 01:15, 3 January 2019 (UTC)

Hi Jim77742, I'll go through it in parts:
  • the derivative of P with respect to time. It is defined as periodic time increase per unit time: yes I agree with you, that's why I self-reverted. It was an error when I wrote the text, I was thinking of the frequency.
  • However, as a neutron star ages, the neutron star slows (P increases) and the rate of slowing decreases (P-double dot decreases): I not sure this is correct, but I've left it as it for the time being. The thing is if P-dot decreases at a steady rate, then the P-double dot, being the second derivative of P (with respect to time) should be constant negative value, not decreasing.

Of course if P-dot decreasing rate slows (i.e. P-dot versus time graph flattens with time), then the P-double dot would increase with time. Is this what you're implying with the edit? I'm not sure it's something we can assume. Is this in fact the case? --Jules (Mrjulesd) 03:07, 3 January 2019 (UTC)

I changed to in the parenthesis because "rate of slowing" in the text is . But you are correct in that would typically be negative and fairly constant. It's actually quite hard to measure in many pulsars - especially if they glitch.
I'm thinking this is all a bit too confusing for the casual reader and am now thinking of removing all references to and words such as "rate of slowing". Jim77742 (talk) 02:10, 4 January 2019 (UTC)
In fact I've done it. I think it reads better now. Way less confusing. Jim77742 (talk) 02:20, 4 January 2019 (UTC)
Well I think you're probably right. We'll leave it at that, although I have done some minor c/e. --Jules (Mrjulesd) 22:20, 4 January 2019 (UTC)

Precious anniversary

Precious
Four years!

--Gerda Arendt (talk) 07:32, 2 April 2019 (UTC)

... and five --Gerda Arendt (talk) 05:14, 2 April 2020 (UTC)

Lichess

Actually, it is in Google. I fi put the link in the source, will you keep my revision? — Preceding unsigned comment added by 67.83.21.254 (talk) 22:01, 10 April 2019 (UTC)

Nothing come up on search. Don't edit war, and don't reinsert without providing a citation. --Jules (Mrjulesd) 22:07, 10 April 2019 (UTC)

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Google Code-In 2019 is coming - please mentor some documentation tasks!

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Merry Christmas

Merry Christmas Mrjulesd

Hi Mrjulesd, I wish you and your family a very Merry Christmas
and a very happy and prosperous New Year,
Thanks for all your contributions to the 'pedia this past year,
   –Davey2010talk 00:51, 22 December 2019 (UTC)

Season's Greetings

FWiW Bzuk (talk) 03:21, 23 December 2019 (UTC)

Merry Christmas!

Merry Christmas and a Prosperous 2020!
⛄ 🎅 🎄

Hope you enjoy the Christmas eve with the ones you love and step into the new year with lots of happiness and good health. Wishing you a Merry Christmas and a very Happy New Year!CAPTAIN RAJU(T) 22:12, 23 December 2019 (UTC)

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