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<p>A new series of observations by the Event Horizon Telescope (EHT) collaboration measuring the degree of polarization in the emitted light shows that the black hole Sagittarius A (Sgr A ) in the center of our Milky Way is surrounded by strong, spiral-shaped magnetic fields. Such a magnetic structure is likely produced by the magnetized plasma that is falling onto Sgr A and is similar to that of M87 , the black hole at the center of the galaxy M87. This important result suggests that all black holes may have strong magnetic fields and that Sgr A , like M87 , may emit a particle jet that has not yet been revealed by the observations. The team led by Prof. Luciano Rezzolla, Goethe University Frankfurt, was significantly involved in the evaluation and theoretical interpretation of the new measurements.</p>

United statesRadioastronomie millimetriqueLuciano rezzollaRadioastronomie millimSara issaounAngelo ricarteHarvard smithsonianGeoffrey bowerUniversity of naples federicoAcademia sinica institute of astronomyHarvard black hole initiativeMax planck institute for radio astronomyUniversity of chicagoMethod of researchRadboud universityUniversity of arizona