How can we know if a Solar Radio Burst (SRB) is associated with an Active Region?

[marcocbr]

Hello all! I want to know, please, how can we know if a Solar Radio Burst (SRB) is associated with an Active Region? There is some report that can be used to know this?

Edited September 23, 2021 by marcocbr
Correction

[Marcel de Bont]

I am not an expert on this at all but in my experience, Type II and IV radio sweeps are basically always associated with major solar eruptions (sometimes C-flares but most M and X flares) as its the shock wave of the CME plowing trough the solar atmosphere which causes these very distinct radio noise patterns. If you see such an alert you can correlate the time of the sweep with the X-ray plot. There should be a flare just before the sweep. If you know that there was a flare, you can than look up which region that produced the flare. Hope this helps. Please respond if something was unclear.

[marcocbr]

Okay, thanks in advance, Marcel!! I'm on my way to getting the answer I want... Considering what you've said, and with a little bit of what I know, I think the most obvious way to relate an SRB (of any type) to an active region is to necessarily relate the SRB to a flare and then just check which is the active region of the flare (in most cases it is possible to relate an active region to a flare). Am I right? If so, how can I confirm that an SRB is related to a particular flare (or flares, if it is possible that an SRB is related to more than one flare)?

[helios]

14 hours ago, marcocbr said:

If so, how can I confirm that an SRB is related to a particular flare (or flares, if it is possible that an SRB is related to more than one flare)?

What criteria does qualify as "confirmation" for you?
Usually when we detect a radio burst, the origin can be seen in the Xray/EUV imagery in temporal proximity. It can be from a CME from a flare, but also for example from a filament eruption.

Noteworthy in this regard is the upcoming NASA mission SunRISE, whose goal it is to explore the origin of solar radio burst emission. The large aperture should allow a spatial resolution high enough to pinpoint the source of radio emission.
https://science.nasa.gov/missions/sunrise

Edited September 24, 2021 by helios

[Marcel de Bont]

21 uren geleden, marcocbr zei:

Okay, thanks in advance, Marcel!! I'm on my way to getting the answer I want... Considering what you've said, and with a little bit of what I know, I think the most obvious way to relate an SRB (of any type) to an active region is to necessarily relate the SRB to a flare and then just check which is the active region of the flare (in most cases it is possible to relate an active region to a flare). Am I right? If so, how can I confirm that an SRB is related to a particular flare (or flares, if it is possible that an SRB is related to more than one flare)?

It is extremely rare for two major eruptions to occur at the same time so it should not be difficult at all to pinpoint the location of the eruption and thus what caused the radio sweep(s). If you see there has been a major flare on the Sun you can easily pinpoint with the help of SDO where this flare occurred. You can also use videos from SDO to watch the shock wave of the blast. It is these shock waves that result in the radio sweeps. You just look up videos from SDO, preferably from AIA 193 and you should be able to spot the shock wave as it leaves the blast site. AIA 193 difference imagery work really well and it is not hard to pinpoint the location of an eruptive event.

We usually post such videos on Twitter or other social media. They are very obvious to spot. Take a look at this one. Spot the eruption: