Как измеряют магнитные поля галактик

Чуть больше столетия назад, в 1908 году, американский астроном Джордж Хейл впервые измерил расщепление спектральных линий в излучении, которое приходит от солнечных пятен. Таким образом он оценил магнитное поле в пятнах. Оно оказалось большим — около 1 кГс (для астрономов неактуально различие между напряженностью магнитного поля и его индукцией, поэтому они отказываются пользоваться эрстедами и измеряют магнитное поле в гауссах).

Так магнитные поля вошли в астрономию. На вопрос о том, как измеряются магнитные поля в астрономии, хороший студент должен уверенно отвечать: «По эффекту Зеемана!». А кто не знает ответ — читайте текст от доктора физико-математических наук, профессора МГУ Дмитрия Соколова.

6 thoughts on “Как измеряют магнитные поля галактик

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