242 citations · 1.7k across the 39 of their papers we have counts for
39 papers
Active regions and the large-scale magnetic field of solar cycle 24
Ismo Tähtinen, Timo Asikainen, Kalevi Mursula
Most of the intracyclic variability in the large-scale solar magnetic field comes from the equatorial dipole component of the solar magnetic field. The equatorial dipole component…
Relation between sunspots and solar EUV irradiance changes during the Gleissberg cycle
Kalevi Mursula
Sunspots are the standard measure of solar magnetic activity, which are also used to estimate solar spectral irradiance over centennial time scales. However, because of the lack of…
Reconstructing solar magnetic fields from historical observations X. Effect of magnetic field inclination and boundary structure on AIA 1600 Å emission
Ismo Tähtinen, Alexei A. Pevtsov, Timo Asikainen +1
The relation between the intensity of chromospheric emissions and the photospheric magnetic field strength has been examined in several studies, but the effect of the magnetic fiel…
Straight outta photosphere: Open solar flux without coronal modeling
Ismo Tähtinen, Timo Asikainen, Kalevi Mursula
The open solar flux, that is, the total magnetic flux escaping the Sun, is one of the most important parameters connecting solar activity to the Earth. The open solar flux is commo…
The Solar and Geomagnetic Storms in May 2024: A Flash Data Report
Hisashi Hayakawa, Yusuke Ebihara, Alexander Mishev +16
In May 2024, the scientific community observed intense solar eruptions that resulted in a great geomagnetic storm and auroral extension, highlighting the need to document and quant…
Transition to a weaker Sun: Changes in the solar atmosphere during the decay of the Modern Maximum
K. Mursula, A. A. Pevtsov, T. Asikainen +2
The Sun experienced a period of unprecedented activity during the 20th century, now called the Modern Maximum (MM). The decay of the MM after cycle 19 has changed the Sun, the heli…