News

Metsähovi measures the strongest Solar event so far in the current Solar cycle

On June 10, 2014, Aalto University Metsähovi Radio Observatory measured the strongest burst so far in the current Solar cycle in an active region.

Its strength was classified as X2.2 and it was proceeded with another strong burst with a strength of X1.5. The type X bursts are the strongest of all Solar bursts. The time of occurrence of the two events were 11:36-11:42 UT and 12:36-12:52 UT. It is highly atypical that such strong bursts follow each other within a short time period as this.

 The active region, AR12087, can be seen in the radio frequency 37 GHz, in the left side of the Solar map (Figure 1). Both events were also measured at a lower frequency of 11.2 GHz (Figure 2). The stronger, X2.2, event was visible even in the dm range of the Callisto system (Figure 3). All of the Aalto University Metsähovi Radio Observatory's measurement devices used for Solar research caught the activity, which is quite remarkable.

In the current Solar cycle there might have been stronger bursts, but this is the most powerful event measured at Metsähovi. The strong Solar activity continues even at the moment.

Figure 1. The Solar map measured on June 10, 2014. Note the active region, AR12087, on the left.

Figure 2. The X2.2 and X1.5 Solar events measured at 11.2 GHz.

Figure 3. The X2.2 Solar event measured by the Callisto system.
 
For more information about the event contact:
 
PhD Juha Kallunki
[email protected]
+358 29 442 4852
 
More information about Solar research at Aalto University Metsähovi Radio Observatory can be found here:

https://www.aalto.fi/en/metsahovi-radio-observatory/solar-research

  • Published:
  • Updated:

Read more news

Dr. Swarnalok De and logos of the Finnish Cultural Foundation, Aalto University and MMD group
Research & Art Published:

Dr. Swarnalok De receives a one-year grant from the Finnish Cultural Foundation

Awarded for research on the development of wearable healthcare sensors for autonomous health monitoring of the aging population
The magnetic properties of a material can affect how it interacts with light.
Press releases, Research & Art Published:

A new optical metamaterial makes true one-way glass possible

Researchers have discovered how to make a new optical metamaterial that would underpin a variety of new technologies.
Mikko Alava ja kolme muuta tutkimusryhmän jäsentä kuvattuna teknisen laitteen äärellä.
Research & Art Published:

Significant grants for science from the Finnish Cultural Foundation

A total of thirty individuals and research groups from Aalto University received grants from the Finnish Cultural Foundation for science and art. Professors Harri Lipsanen and Zhipei Sun and their team, were awarded a large grant to develop electronic components mimicking the structure and function of the human brain. Among the grantees is also Professor Mikko Alava, whose team is developing water-resistant foams as substitutes for plastic using AI-based methods.
Photo
Research & Art Published:

Overview of Aalto's open access publications 2023

90 % of Aalto's scientific journal articles published in 2023 are available open access.