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Carrington Event
The Carrington Event was the most intense geomagnetic storm in recorded history, peaking on 1–2 September 1859 during solar cycle 10. It created strong auroral displays that were reported globally and caused sparking and even fires in telegraph stations. The geomagnetic storm was most likely the result of a coronal mass ejection (CME) from the Sun colliding with Earth's magnetosphere.
The geomagnetic storm was associated with a very bright solar flare on 1 September 1859. It was observed and recorded independently by British astronomers Richard Carrington and Richard Hodgson—the first records of a solar flare. A geomagnetic storm of this magnitude occurring today has the potential to cause widespread electrical disruptions, blackouts, and damage to the electrical power grid.
On 1 and 2 September 1859, one of the largest geomagnetic storms (as recorded by ground-based magnetometers) occurred. Estimates of the storm strength (Dst) range from −0.80 to −1.75 μT.
The geomagnetic storm is thought to have been caused by a coronal mass ejection (CME) that traveled directly toward Earth, taking 17.6 hours to make the 150×106 km (93×106 mi) journey. Typical CMEs take several days to arrive at Earth, but it is believed that the relatively high speed of this CME was made possible by a prior CME, perhaps the cause of the large aurora event on 29 August that "cleared the way" of ambient solar wind plasma for the Carrington Event.
Just before noon on 1 September 1859, the English astronomers Richard Carrington and Richard Hodgson independently recorded the earliest observations of a solar flare. Carrington and Hodgson compiled independent reports which were published side by side in Monthly Notices of the Royal Astronomical Society and exhibited their drawings of the event at the November 1859 meeting of the Royal Astronomical Society.
Because of a geomagnetic solar flare effect (a "magnetic crochet") observed in the Kew Observatory magnetometer record by Scottish physicist Balfour Stewart, and a geomagnetic storm observed the following day, Carrington suspected a solar–terrestrial connection. However, he was not sure whether the two phenomena were related, writing that "one swallow does not make a summer". Worldwide reports of the effects of the geomagnetic storm of 1859 were compiled and published by American mathematician Elias Loomis, which support the observations of Carrington and Stewart.
Auroras were seen around the world in the northern and southern hemispheres. The aurora borealis over the Rocky Mountains in the United States was so bright that the glow woke gold miners, who were reported to have begun to prepare breakfast because they thought it was morning. It was also reported that people in the north-eastern United States could read a newspaper by the aurora's light. The aurora was also visible from the poles to low latitude areas such as south-central Mexico, Cuba, Hawaii, Queensland, southern Japan and China, New Zealand, and even at lower latitudes very close to the equator, such as Colombia.
On Saturday 3 September 1859, the Baltimore American and Commercial Advertiser reported that
Carrington Event
The Carrington Event was the most intense geomagnetic storm in recorded history, peaking on 1–2 September 1859 during solar cycle 10. It created strong auroral displays that were reported globally and caused sparking and even fires in telegraph stations. The geomagnetic storm was most likely the result of a coronal mass ejection (CME) from the Sun colliding with Earth's magnetosphere.
The geomagnetic storm was associated with a very bright solar flare on 1 September 1859. It was observed and recorded independently by British astronomers Richard Carrington and Richard Hodgson—the first records of a solar flare. A geomagnetic storm of this magnitude occurring today has the potential to cause widespread electrical disruptions, blackouts, and damage to the electrical power grid.
On 1 and 2 September 1859, one of the largest geomagnetic storms (as recorded by ground-based magnetometers) occurred. Estimates of the storm strength (Dst) range from −0.80 to −1.75 μT.
The geomagnetic storm is thought to have been caused by a coronal mass ejection (CME) that traveled directly toward Earth, taking 17.6 hours to make the 150×106 km (93×106 mi) journey. Typical CMEs take several days to arrive at Earth, but it is believed that the relatively high speed of this CME was made possible by a prior CME, perhaps the cause of the large aurora event on 29 August that "cleared the way" of ambient solar wind plasma for the Carrington Event.
Just before noon on 1 September 1859, the English astronomers Richard Carrington and Richard Hodgson independently recorded the earliest observations of a solar flare. Carrington and Hodgson compiled independent reports which were published side by side in Monthly Notices of the Royal Astronomical Society and exhibited their drawings of the event at the November 1859 meeting of the Royal Astronomical Society.
Because of a geomagnetic solar flare effect (a "magnetic crochet") observed in the Kew Observatory magnetometer record by Scottish physicist Balfour Stewart, and a geomagnetic storm observed the following day, Carrington suspected a solar–terrestrial connection. However, he was not sure whether the two phenomena were related, writing that "one swallow does not make a summer". Worldwide reports of the effects of the geomagnetic storm of 1859 were compiled and published by American mathematician Elias Loomis, which support the observations of Carrington and Stewart.
Auroras were seen around the world in the northern and southern hemispheres. The aurora borealis over the Rocky Mountains in the United States was so bright that the glow woke gold miners, who were reported to have begun to prepare breakfast because they thought it was morning. It was also reported that people in the north-eastern United States could read a newspaper by the aurora's light. The aurora was also visible from the poles to low latitude areas such as south-central Mexico, Cuba, Hawaii, Queensland, southern Japan and China, New Zealand, and even at lower latitudes very close to the equator, such as Colombia.
On Saturday 3 September 1859, the Baltimore American and Commercial Advertiser reported that
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