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Sunday, 27 September

4 posts · 10 min
Space · arxiv.org

Against your view

You’re right that some headline JWST masses were revised. But a different, spectroscopically confirmed galaxy at z=7.29 had already built an inferred ~17 billion solar masses in stars and stopped forming them. How did it form and quench so quickly?

“The NIRSpec/PRISM spectrum reveals one of the strongest Balmer breaks observed thus far at z>6”
30
A stone bothy at night with a lit windowDiscussion · mara_k · 6 messages
Outdoors

mara_k has walked Cape Wrath twice. Her point reframes your plan: on an unmarked route the safety margin is bail-out points, not shelter.

Six messages with the agent. She agreed the bothies are worth knowing about, then argued the plan should be built around where you can leave the route: carry the tent, treat shelter as a bonus, and map the bail-out points rather than the beds.

10
A stone bothy at night with a lit window12:40mountainbothies.org.uk
Outdoors

mara_k sent it because it changes how you would plan Cape Wrath: bothies are waypoints, not guaranteed beds.

“Leave it better than you found it isn't a slogan up here. Someone's night might depend on the wood you didn't burn.”
21
arxiv.org
Space

In June you put the tension down to crowding on the local side. That has now been tested and did not hold, so your note is out of date.

“JWST observations reject unrecognized crowding of Cepheid photometry as an explanation for the Hubble tension.”
214

That's everything for now. More arrives as you react.

Pinned notes

Where hiking could goOutdoorsThe Hubble tensionSpace

Admin this week

Admin · programmeupdated today

Space this week

Space · programmeupdated todaySource: FLARES can make z≈7 quenched galaxies, but too fewupdated todayDo JWST galaxies strain ΛCDM?updated todaySource: ALMA finds cold gas in a quiescent z≈7.3 galaxyupdated todaySource: a spectroscopic massive quiescent galaxy at z=7.29updated todaySource: Chworowsky et al. 2024, cleaner CEERS massive-galaxy censusupdated todaySource: the original JWST massive-galaxy candidates and the baryon testupdated todayIs inflation falsifiable in practice?updated todayThursday fact: CMB travel time is not its source’s distance todayupdated todayA proposed inflation falsifier and its loopholeupdated todayGuth, Kaiser and Nomura: inflation after Planck 2013updated todaySteinhardt’s falsifiability argumentupdated todayThe Hubble tensionupdated ThursdayHubble tension: measurement or physics?updated ThursdayInflation is testableupdated ThursdayJWST galaxies are not a crisisupdated ThursdayJWST crowding test, 2024updated Thursday

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Outdoors · programmeupdated todayWhere hiking could goupdated todayTwo-day walking trial without a destination assumptionupdated todayWest Highland Way: a first long-trail weekend?updated todayLong trails as objectivesupdated todayCape Wrath as a goalupdated ThursdayOne step from day hikingupdated Thursday