I Is EK Draconis' binary status a factor in its ability to produce large CMEs?

[Astronuc]

LiveScience headline - Mega plasma ball erupted from a sun-like star. It was 10 times larger than any ever seen.
https://www.livescience.com/sun-like-star-coronal-mass-ejection

A baby version of the sun recently let off an eruption of magnetic plasma gas 10 times larger than any ever seen from a sun-like star, according to new research.

The star, EK Draconis, is only about 100 million years old, meaning it looks like Earth's sun about 4.5 billion years ago, said study leader Yuta Notsu, a research associate at the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder. The findings suggest the sun is capable of belching out coronal mass ejections (CMEs) — bubbles of plasma gas — larger than any directly observed so far. However, because the sun is older than EK Draconis, it's likely to be calmer, with enormous CMEs occurring fewer and farther between.

CU Boulder article - A young, sun-like star may hold warnings for life on Earth
https://www.colorado.edu/today/2021/12/09/ek-draconis

Kosuke Namekata et al., "Probable detection of an eruptive filament from a superflare on a solar-type star", Nature Astronomy
https://www.nature.com/articles/s41550-021-01532-8

EK Draconis (EK Dra) is known to be an active young solar-type star (a G-type, zero-age main-sequence star with an effective temperature of 5,560–5,700 K and age of 50–125 Myr. From Waite, I. A. et al. Magnetic fields on young, moderately rotating sun-like stars—II. EK Draconis (HD 129333). Mon. Not. R. Astron. Soc. 465, 2076–2091 (2017).

https://www.aanda.org/articles/aa/full_html/2018/12/aa33496-18/aa33496-18.html
https://www.aanda.org/articles/aa/abs/2007/36/aa7551-07/aa7551-07.html

https://adsabs.harvard.edu/full/1995A&A...301..201GGiven the interesting news, it is surprising that there is little information readily available.
https://second.wiki/wiki/ek_draconis

I'm wondering about the veracity of the headlines about a warning for life on Earth. It seems to imply the Sun could produce such a CME. But, what to models predict, and what recent evidence would suggest the Sun would produce such a CME?

 

[Ibix]

The Sun has certainly produced some unpleasantly large CMEs - the Carrington Event actually set fire to some wireless stations in the 1850s. Not sure that would be a threat to life on Earth, but given the amount of wireless equipped stuff we use these days it probably wouldn't do western civilisation all that much good.

 

[Astronuc]

The Sun has certainly produced some unpleasantly large CMEs - the Carrington Event actually set fire to some wireless stations in the 1850s.

I was thinking about the Carrington Event in particular. How to compare the recent observation (stated as 10x more than anything observed . . .) with the Carrington Event, or what we have observed with detailed measurements.

 

[Ibix]

The abstract of the Nature paper says it's ten times the mass of anything our Sun has spat out (figure 3 and table 1 have some details), although the text notes that there are considerable uncertainties in either direction for the EK Draconis flare. It's also an outlier energy-wise, which I'd think was more of an issue, but it isn't such an extreme outlier.

I've no idea how big the Carrington event was in mass/energy terms, though. We may well not know, given how long ago it was.

 

[Astronuc]

I've no idea how big the Carrington event was in mass/energy terms, though. We may well not know, given how long ago it was.

There are estimates of the CME of the Carrington Event and the probability of such events.

Probability estimation of a Carrington-like geomagnetic storm
https://www.nature.com/articles/s41598-019-38918-8

The 1859 space weather event revisited: limits of extreme activity
https://www.swsc-journal.org/articles/swsc/pdf/2013/01/swsc130015.pdfComparisons of Carrington-Class Solar Particle Event Radiation Exposure Estimates on Mars utilizing the CAM, CAF, MAX, and FAX Human Body Models
https://www.irpa.net/members/TS10a.2.pdf

Then there is the matter of comparing an observation from EK Draconis (G0V) with that observed from the sun (G2V). In https://second.wiki/wiki/ek_draconis, the star is classified as G0V with a temperature of 5750 K, which is the value assigned to the G2V spectral type, or about the same (photosphere) temperature of the Sun. So, something appears to be a bit off. Yet, if EK Draconis is a G0V with M ~ 1.06, and apparently much younger than the Sun, is it reasonable to use an extreme event to speculate on a solar event?

https://en.wikipedia.org/wiki/G-type_main-sequence_star

Spectral type	Mass (M☉)	Radius (R☉)	Luminosity (L☉)	Effective temperature (K)	Color index (B − V)
G0V	1.06	1.100	1.35	5,930	0.60
G1V	1.03	1.060	1.20	5,860	0.62
G2V	1.00	1.012	1.02	5,770	0.65

Also, this star is one of a binary pair with a lower mass partner.

Would being a binary have an influence?