Talk:2643: Cosmologist Gift - Revision history

172.70.86.34: Close-quote

2022-07-29T09:49:37Z

Close-quote

172.70.86.34 at 09:48, 29 July 2022

2022-07-29T09:48:45Z

172.70.211.134: Fix question

2022-07-29T08:34:04Z

Fix question

108.162.246.206: Ask

2022-07-27T10:05:40Z

Ask

108.162.245.147: reply

2022-07-14T10:16:43Z

172.69.79.173 at 06:32, 12 July 2022

2022-07-12T06:32:39Z

SDSpivey at 23:31, 11 July 2022

2022-07-11T23:31:10Z

172.70.211.36: Comment

2022-07-11T22:30:19Z

Comment

172.70.211.36: DIrect link

2022-07-11T22:29:11Z

DIrect link

172.70.210.233: Yay!

2022-07-11T22:23:00Z

Yay!

← Older revision		Revision as of 09:49, 29 July 2022
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	How much more mass do neutrinos have when they're going 1-10<sup>-n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)		How much more mass do neutrinos have when they're going 1-10<sup>-n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)
−	:(The attempt to [https://www.explainxkcd.com/wiki/index.php?title=Talk:2643:_Cosmologist_Gift&curid=25418&diff=291075&oldid=290904 fix the question] assumes that 108.162.246.206 was not intending values of n<0, already... What if you've negated their negative! :P I agree it was messy, though. Just think it's rude to alter someone else's comment, hence why I didn't make it "1-(1/10ⁿ)", which was my own first (and equivalent) thought. Shortly before "but I bet it ''is'' a homework question...) [[Special:Contributions/172.70.86.34\|172.70.86.34]] 09:48, 29 July 2022 (UTC)	+	:(The attempt to [https://www.explainxkcd.com/wiki/index.php?title=Talk:2643:_Cosmologist_Gift&curid=25418&diff=291075&oldid=290904 fix the question] assumes that 108.162.246.206 was not intending values of n<0, already... What if you've negated their negative! :P I agree it was messy, though. Just think it's rude to alter someone else's comment, hence why I didn't make it "1-(1/10ⁿ)", which was my own first (and equivalent) thought. Shortly before "but I bet it ''is'' a homework question...") [[Special:Contributions/172.70.86.34\|172.70.86.34]] 09:48, 29 July 2022 (UTC)

← Older revision		Revision as of 09:48, 29 July 2022
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	How much more mass do neutrinos have when they're going 1-10<sup>-n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)		How much more mass do neutrinos have when they're going 1-10<sup>-n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)
		+	:(The attempt to [https://www.explainxkcd.com/wiki/index.php?title=Talk:2643:_Cosmologist_Gift&curid=25418&diff=291075&oldid=290904 fix the question] assumes that 108.162.246.206 was not intending values of n<0, already... What if you've negated their negative! :P I agree it was messy, though. Just think it's rude to alter someone else's comment, hence why I didn't make it "1-(1/10ⁿ)", which was my own first (and equivalent) thought. Shortly before "but I bet it ''is'' a homework question...) [[Special:Contributions/172.70.86.34\|172.70.86.34]] 09:48, 29 July 2022 (UTC)

← Older revision		Revision as of 08:34, 29 July 2022
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	:Why would any self-respecting cosmologist want to mess up the box with more than the minimum extraneous contents? [[Special:Contributions/108.162.245.147\|108.162.245.147]] 10:16, 14 July 2022 (UTC)		:Why would any self-respecting cosmologist want to mess up the box with more than the minimum extraneous contents? [[Special:Contributions/108.162.245.147\|108.162.245.147]] 10:16, 14 July 2022 (UTC)

−	How much more mass do neutrinos have when they're going 1-10<sup>n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)	+	How much more mass do neutrinos have when they're going 1-10<sup>-n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)

← Older revision		Revision as of 10:05, 27 July 2022
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	"what they or anyone else would do with such a box is uncertain." - Put things in it, obviously. [[Special:Contributions/172.69.79.173\|172.69.79.173]] 06:32, 12 July 2022 (UTC)		"what they or anyone else would do with such a box is uncertain." - Put things in it, obviously. [[Special:Contributions/172.69.79.173\|172.69.79.173]] 06:32, 12 July 2022 (UTC)
	:Why would any self-respecting cosmologist want to mess up the box with more than the minimum extraneous contents? [[Special:Contributions/108.162.245.147\|108.162.245.147]] 10:16, 14 July 2022 (UTC)		:Why would any self-respecting cosmologist want to mess up the box with more than the minimum extraneous contents? [[Special:Contributions/108.162.245.147\|108.162.245.147]] 10:16, 14 July 2022 (UTC)
		+
		+	How much more mass do neutrinos have when they're going 1-10<sup>n</sup> times the speed of light? I swear this is not a homework question. [[Special:Contributions/108.162.246.206\|108.162.246.206]] 10:05, 27 July 2022 (UTC)

← Older revision		Revision as of 10:16, 14 July 2022
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	"what they or anyone else would do with such a box is uncertain." - Put things in it, obviously. [[Special:Contributions/172.69.79.173\|172.69.79.173]] 06:32, 12 July 2022 (UTC)		"what they or anyone else would do with such a box is uncertain." - Put things in it, obviously. [[Special:Contributions/172.69.79.173\|172.69.79.173]] 06:32, 12 July 2022 (UTC)
		+	:Why would any self-respecting cosmologist want to mess up the box with more than the minimum extraneous contents? [[Special:Contributions/108.162.245.147\|108.162.245.147]] 10:16, 14 July 2022 (UTC)

← Older revision		Revision as of 06:32, 12 July 2022
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	:The group to watch [https://iopscience.iop.org/article/10.3847/1538-4357/ac332d/meta as JWST's first light comes in is Yale's,] who propose specific testable hypotheses for its deep IR source count distribution, and use a [https://twitter.com/SheerPriya/status/1472352431468003328 non-monochromatic (platycurtic) mass distribution] for black holes, which is the only correct choice for merging bodies. Specifically, NASA is releasing a [https://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images/ SMACS 0723 field] from JWST [https://www.nasa.gov/webbfirstimages tomorrow,] which should be able to test [https://twitter.com/SheerPriya/status/1546576050976870400 these predictions.] Another author to keep an eye on as JWST results roll in is [https://iopscience.iop.org/article/10.1088/1361-6633/ac1e31 Bernard Carr] ([https://arxiv.org/pdf/2002.12778.pdf paywall-free preprint]) known for his DM literature reviews over the years, and who has become an ardent PBH DM proponent post-LIGO/Virgo. [[Special:Contributions/162.158.166.235\|162.158.166.235]] 20:38, 11 July 2022 (UTC)		:The group to watch [https://iopscience.iop.org/article/10.3847/1538-4357/ac332d/meta as JWST's first light comes in is Yale's,] who propose specific testable hypotheses for its deep IR source count distribution, and use a [https://twitter.com/SheerPriya/status/1472352431468003328 non-monochromatic (platycurtic) mass distribution] for black holes, which is the only correct choice for merging bodies. Specifically, NASA is releasing a [https://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images/ SMACS 0723 field] from JWST [https://www.nasa.gov/webbfirstimages tomorrow,] which should be able to test [https://twitter.com/SheerPriya/status/1546576050976870400 these predictions.] Another author to keep an eye on as JWST results roll in is [https://iopscience.iop.org/article/10.1088/1361-6633/ac1e31 Bernard Carr] ([https://arxiv.org/pdf/2002.12778.pdf paywall-free preprint]) known for his DM literature reviews over the years, and who has become an ardent PBH DM proponent post-LIGO/Virgo. [[Special:Contributions/162.158.166.235\|162.158.166.235]] 20:38, 11 July 2022 (UTC)
	:W00T! They decided to do SMACS 0723 first today! https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet A gift to cosmologists indeed! [[Special:Contributions/172.70.210.233\|172.70.210.233]] 22:23, 11 July 2022 (UTC)		:W00T! They decided to do SMACS 0723 first today! https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet A gift to cosmologists indeed! [[Special:Contributions/172.70.210.233\|172.70.210.233]] 22:23, 11 July 2022 (UTC)
		+
		+	"what they or anyone else would do with such a box is uncertain." - Put things in it, obviously. [[Special:Contributions/172.69.79.173\|172.69.79.173]] 06:32, 12 July 2022 (UTC)

← Older revision		Revision as of 23:31, 11 July 2022
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	:Fixed; thank you. [[Special:Contributions/172.70.210.125\|172.70.210.125]] 01:18, 9 July 2022 (UTC)		:Fixed; thank you. [[Special:Contributions/172.70.210.125\|172.70.210.125]] 01:18, 9 July 2022 (UTC)
		+
		+	:Since no one has detected ANY dark matter, you can claim any amount is in the box. [[User:SDSpivey\|SDSpivey]] ([[User talk:SDSpivey\|talk]]) 23:31, 11 July 2022 (UTC)

	[https://arxiv.org/abs/2204.09143 Here's] a more recent PBH DM source than those already cited which could comport with Randall's 0.4% DM particles implication, but doesn't do so explicitly. [[Special:Contributions/172.70.206.213\|172.70.206.213]] 02:35, 9 July 2022 (UTC)		[https://arxiv.org/abs/2204.09143 Here's] a more recent PBH DM source than those already cited which could comport with Randall's 0.4% DM particles implication, but doesn't do so explicitly. [[Special:Contributions/172.70.206.213\|172.70.206.213]] 02:35, 9 July 2022 (UTC)

@@ Line 26: / Line 26: @@
 :To answer your question about the sizes, assuming [https://3iom3142cnb81rlnt6w4mtlr-wpengine.netdna-ssl.com/wp-content/uploads/2020/09/08-GW190521-Mass-Plot-Graveyard.png LIGO/Virgo's 3-160 solar mass range] is representative of typical black holes and likely contains their median is kind of unavoidable at this point. If the median is 50 solar masses and all dark matter is black holes, that would work out to around one per star.
 :The group to watch [https://iopscience.iop.org/article/10.3847/1538-4357/ac332d/meta as JWST's first light comes in is Yale's,] who propose specific testable hypotheses for its deep IR source count distribution, and use a [https://twitter.com/SheerPriya/status/1472352431468003328 non-monochromatic (platycurtic) mass distribution] for black holes, which is the only correct choice for merging bodies. Specifically, NASA is releasing a [https://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images/ SMACS 0723 field] from JWST [https://www.nasa.gov/webbfirstimages tomorrow,] which should be able to test [https://twitter.com/SheerPriya/status/1546576050976870400 these predictions.] Another author to keep an eye on as JWST results roll in is [https://iopscience.iop.org/article/10.1088/1361-6633/ac1e31 Bernard Carr] ([https://arxiv.org/pdf/2002.12778.pdf paywall-free preprint]) known for his DM literature reviews over the years, and who has become an ardent PBH DM proponent post-LIGO/Virgo. [[Special:Contributions/162.158.166.235|162.158.166.235]] 20:38, 11 July 2022 (UTC)
-:W00T! They decided to do SMACS 0723 first today! https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet [[Special:Contributions/172.70.210.233|172.70.210.233]] 22:23, 11 July 2022 (UTC)
+:W00T! They decided to do SMACS 0723 first today! https://www.nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet A gift to cosmologists indeed! [[Special:Contributions/172.70.210.233|172.70.210.233]] 22:23, 11 July 2022 (UTC)

← Older revision		Revision as of 22:23, 11 July 2022
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	:To answer your question about the sizes, assuming [https://3iom3142cnb81rlnt6w4mtlr-wpengine.netdna-ssl.com/wp-content/uploads/2020/09/08-GW190521-Mass-Plot-Graveyard.png LIGO/Virgo's 3-160 solar mass range] is representative of typical black holes and likely contains their median is kind of unavoidable at this point. If the median is 50 solar masses and all dark matter is black holes, that would work out to around one per star.		:To answer your question about the sizes, assuming [https://3iom3142cnb81rlnt6w4mtlr-wpengine.netdna-ssl.com/wp-content/uploads/2020/09/08-GW190521-Mass-Plot-Graveyard.png LIGO/Virgo's 3-160 solar mass range] is representative of typical black holes and likely contains their median is kind of unavoidable at this point. If the median is 50 solar masses and all dark matter is black holes, that would work out to around one per star.
	:The group to watch [https://iopscience.iop.org/article/10.3847/1538-4357/ac332d/meta as JWST's first light comes in is Yale's,] who propose specific testable hypotheses for its deep IR source count distribution, and use a [https://twitter.com/SheerPriya/status/1472352431468003328 non-monochromatic (platycurtic) mass distribution] for black holes, which is the only correct choice for merging bodies. Specifically, NASA is releasing a [https://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images/ SMACS 0723 field] from JWST [https://www.nasa.gov/webbfirstimages tomorrow,] which should be able to test [https://twitter.com/SheerPriya/status/1546576050976870400 these predictions.] Another author to keep an eye on as JWST results roll in is [https://iopscience.iop.org/article/10.1088/1361-6633/ac1e31 Bernard Carr] ([https://arxiv.org/pdf/2002.12778.pdf paywall-free preprint]) known for his DM literature reviews over the years, and who has become an ardent PBH DM proponent post-LIGO/Virgo. [[Special:Contributions/162.158.166.235\|162.158.166.235]] 20:38, 11 July 2022 (UTC)		:The group to watch [https://iopscience.iop.org/article/10.3847/1538-4357/ac332d/meta as JWST's first light comes in is Yale's,] who propose specific testable hypotheses for its deep IR source count distribution, and use a [https://twitter.com/SheerPriya/status/1472352431468003328 non-monochromatic (platycurtic) mass distribution] for black holes, which is the only correct choice for merging bodies. Specifically, NASA is releasing a [https://www.nasa.gov/feature/goddard/2022/nasa-shares-list-of-cosmic-targets-for-webb-telescope-s-first-images/ SMACS 0723 field] from JWST [https://www.nasa.gov/webbfirstimages tomorrow,] which should be able to test [https://twitter.com/SheerPriya/status/1546576050976870400 these predictions.] Another author to keep an eye on as JWST results roll in is [https://iopscience.iop.org/article/10.1088/1361-6633/ac1e31 Bernard Carr] ([https://arxiv.org/pdf/2002.12778.pdf paywall-free preprint]) known for his DM literature reviews over the years, and who has become an ardent PBH DM proponent post-LIGO/Virgo. [[Special:Contributions/162.158.166.235\|162.158.166.235]] 20:38, 11 July 2022 (UTC)
		+	:W00T! They decided to do SMACS 0723 first today! https://www.nasa.gov/webbfirstimages [[Special:Contributions/172.70.210.233\|172.70.210.233]] 22:23, 11 July 2022 (UTC)