HINODE apprehends record breaking solar magnetic field

HINODE apprehends record breaking solar magnetic field as astronomers at the National Astronomical Observatory of Japan (NAOJ) noted the strongest magnetic field instantly measured on the exterior of the Sun. Examining the data for five days round about the manifestation of this outpaced magnetic field, the astronomers decided that it was initiated as an outcome of gas deluge from one sunspot shoving against another sunspot.


Magnetism performs a crucial role in numerous solar phenomena such as flares, mass ejections, flux ropes, and coronal heating. Sunspots are regions of intensive magnetic fields. A sunspot entails normally, a circular dark core, the umbra, with a vertical magnetic field and radially-elongated fine threads (the penumbra) with a horizontal field. The Penumbra nurtures an external flow of gas along the horizontal threads. The darkness of umbra is usually corresponded with the magnetic field strength. Hence, the strongest magnetic field in each sunspot is situated in the umbra in most cases.

Joten Okamoto (NAOJ Fellow) and Takashi Sakurai (Professor Emeritus of NAOJ) were researching the data captured by the Solar Optical Telescope onboard HINODE, when the spotted the signature of powerful magnetized iron atoms in a sunspot. Exceptionally the data signified a magnetic field strength of 6,250 gauss. This is more than double the 3,000 gauss field found around most sunspots. Formerly magnetic fields this powerful on the Sun had only been conjectured indirectly. More exceptionally the most powerful field was not in the dark part of Umbra but was situated in the shining area between two umbrae.