Drax Spacex Posted December 8, 2021 Share Posted December 8, 2021 Someone needs to shovel more coal into the sun's furnace. The GOES-16 Solar X-Ray Flux on 2021-12-08 16:19 UTC registered a paltry A0.19. The data appear to be valid. I don't recall having seen the solar flux drop this low. Is such a low value for solar flux rare? Does it imply anything of physical significance, other than a remarkably though temporarily quiet sun? 1 Link to comment Share on other sites More sharing options...
Solarflaretracker200 Posted December 8, 2021 Share Posted December 8, 2021 Huh. Good question Link to comment Share on other sites More sharing options...
Maurizio Marsigli Posted December 9, 2021 Share Posted December 9, 2021 Cicle 25: Like Dalton minimum or Maunder minimum. You can choose. Good global warming from Italy. (Info: www.attivitasolare.com) 🥶 Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 9, 2021 Share Posted December 9, 2021 39 minutes ago, Maurizio Marsigli said: Cicle 25: Like Dalton minimum or Maunder minimum. You can choose. Good global warming from Italy. (Info: www.attivitasolare.com) 🥶 A low point for a day or so in the very beginning of a cycle doesn’t really reflect at all on the max strength of the Solar Cycle Link to comment Share on other sites More sharing options...
Christopher S. Posted December 9, 2021 Share Posted December 9, 2021 The Sun has entered stealth mode to avoid detection from the Great Ones (joke) Link to comment Share on other sites More sharing options...
Solarflaretracker200 Posted December 9, 2021 Share Posted December 9, 2021 😂 1 1 1 Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 9, 2021 Share Posted December 9, 2021 3 hours ago, Christopher S. said: The Sun has entered stealth mode to avoid detection from the Great Ones (joke) Too many 1s 😭😭 Link to comment Share on other sites More sharing options...
Solution Vancanneyt Sander Posted December 9, 2021 Solution Share Posted December 9, 2021 6 uren geleden, Drax Spacex zei: Is such a low value for solar flux rare? That’s normal value for solar minimum. With a spotless sun you’ll easily get this due to lack of AR 1 1 Link to comment Share on other sites More sharing options...
Kaimbridge Posted December 9, 2021 Share Posted December 9, 2021 5 hours ago, Drax Spacex said: Someone needs to shovel more coal into the sun's furnace. The GOES-16 Solar X-Ray Flux on 2021-12-08 16:19 UTC registered a paltry A0.19. The data appear to be valid. I don't recall having seen the solar flux drop this low. Is such a low value for solar flux rare? Of course—just look back to last February: E.g., 2020-Feb-17. Just a nitpick: “solar flux” is generally considered the “solar (2800 MHz Penticton) radio flux” (yesterday = 77), which is different than the “X-ray flux” or “solar X-ray flux” (as you properly called it the first time....I’m just pointing this out for the space wx newbies that may be just dropping by! P=) 1 1 Link to comment Share on other sites More sharing options...
dave Posted December 9, 2021 Share Posted December 9, 2021 "...the very beginning of a cycle..." Silso regards Cycle 25 as starting in December 2019, in which case the cycle is two years old. I would suggest "early part of the cycle" is more appropriate language. There was one spotless day at a similar stage in Cycle 24. The present spotless sun and the continuing high galactic cosmic ray flux are definitely intriguing. 2 Link to comment Share on other sites More sharing options...
Christina.F Posted December 9, 2021 Share Posted December 9, 2021 The present spotless sun and the continuing high galactic cosmic ray flux are definitely intriguing. Could the high cosmic-ray flux in absence of sunspots be because of another sun hidden behind our sun that we do not know about...yet 1 Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 9, 2021 Share Posted December 9, 2021 5 hours ago, Christina.F said: The present spotless sun and the continuing high galactic cosmic ray flux are definitely intriguing. Could the high cosmic-ray flux in absence of sunspots be because of another sun hidden behind our sun that we do not know about...yet (If that was a joke, ignore my response) Uhhh there can’t be a sun hidden behind our sun. For one thing, we go all the way around it once a year so we see behind it. Secondly, we can tell the existence of large bodies from the gravitational forces they exert on other bodies. I think Neptune or Uranus was (indirectly) “discovered” this way, even before being directly observed. Something much more massive than a planet, like another star, would be impossible to miss. Link to comment Share on other sites More sharing options...
Drax Spacex Posted December 9, 2021 Author Share Posted December 9, 2021 9 hours ago, Kaimbridge said: Of course—just look back to last February: E.g., 2020-Feb-17. Indeed. The X-Ray flux for that day hits A0.1 several times - which appears to be the minimum possible reported value (for graphical data presentation at least). 1 Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 10, 2021 Share Posted December 10, 2021 Looks like finally we might get something more interesting, at least one AR…🤞 Hoping it’s a good one Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted December 10, 2021 Share Posted December 10, 2021 1 uur geleden, Orneno zei: Looks like finally we might get something more interesting, at least one AR…🤞 Hoping it’s a good one Don’t wanna be a party pooper but not all bright zones are active regions, it can also be faculae (which of course are also bright). Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 10, 2021 Share Posted December 10, 2021 1 hour ago, Vancanneyt Sander said: Don’t wanna be a party pooper but not all bright zones are active regions, it can also be faculae (which of course are also bright). What’s a faculae? Link to comment Share on other sites More sharing options...
Solarflaretracker200 Posted December 10, 2021 Share Posted December 10, 2021 16 minutes ago, Orneno said: What’s a faculae? A bright spot or patch between sunspots 1 Link to comment Share on other sites More sharing options...
3gMike Posted December 10, 2021 Share Posted December 10, 2021 19 minutes ago, Solarflaretracker200 said: A bright spot or patch between sunspots They can also appear independent of any sunspots. 1 Link to comment Share on other sites More sharing options...
Drax Spacex Posted December 10, 2021 Author Share Posted December 10, 2021 Once they rotate into Earth view, these bright regions with or without sunspots should increase the background X-Ray flux to sustain it above the A-zeroes and may also increase the solar radio flux into the 80's. Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted December 10, 2021 Share Posted December 10, 2021 4 uren geleden, Orneno zei: What’s a faculae? When sunspot regions die, they likely end as facula. But from a faculae new spots can also emerge. You can easily recognise faculae when looking on HMI: Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 10, 2021 Share Posted December 10, 2021 52 minutes ago, Vancanneyt Sander said: When sunspot regions die, they likely end as facula. But from a faculae new spots can also emerge. You can easily recognise faculae when looking on HMI: Oh, I thought those white spots were h-alpha plages? Link to comment Share on other sites More sharing options...
Sam Warfel Posted December 11, 2021 Share Posted December 11, 2021 Looking promising. Can’t see the region on the surface yet but we can see this Link to comment Share on other sites More sharing options...
Archmonoth Posted December 11, 2021 Share Posted December 11, 2021 (edited) On 12/9/2021 at 1:51 AM, Christina.F said: The present spotless sun and the continuing high galactic cosmic ray flux are definitely intriguing. Could the high cosmic-ray flux in absence of sunspots be because of another sun hidden behind our sun that we do not know about...yet We know enough about the local system to say there isn't another star. Have you looked at the sky? Have you ever seen 2? On 12/8/2021 at 3:24 PM, Drax Spacex said: Someone needs to shovel more coal into the sun's furnace. Yeah, lets clear out that dusty asteroid belt! Edited December 11, 2021 by Archmonoth Link to comment Share on other sites More sharing options...
Vancanneyt Sander Posted December 11, 2021 Share Posted December 11, 2021 8 uren geleden, Orneno zei: Oh, I thought those white spots were h-alpha plages? Yes, spotless plage, h-alpha plage, solar torches. Synonym of facula. 1 Link to comment Share on other sites More sharing options...
MinYoongi Posted December 11, 2021 Share Posted December 11, 2021 On 12/9/2021 at 6:48 AM, Vancanneyt Sander said: That’s normal value for solar minimum. With a spotless sun you’ll easily get this due to lack of AR Also the GOES Satellites struggle with low values. 1 Link to comment Share on other sites More sharing options...
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