Sergey S Tsygankov

Aug 7, 2024 | mdpi.com | Juri Poutanen |Sergey S Tsygankov |Sofia V. Forsblom

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Jun 17, 2024 | nature.com | Jeremy Heyl |Victor Doroshenko |Ilaria Caiazzo |Juri Poutanen |Sergey S Tsygankov |Matteo Bachetti | +62 more

AbstractIn an accreting X-ray pulsar, a neutron star accretes matter from a companion star through an accretion disk. The magnetic field of the rotating neutron star disrupts the inner edge of the disk, funnelling the gas to flow onto the poles on its surface. Hercules X-1 is a prototypical persistent X-ray pulsar about 7 kpc from Earth.

Apr 6, 2023 | nature.com | Niccolò Bucciantini |Riccardo Ferrazzoli |Matteo Bachetti |Niccolò Di Lalla |Carmelo Sgrò |Nicola Omodei | +51 more

AbstractThe Crab pulsar and its nebula are among the most studied astrophysical systems, and constitute one of the most promising environments where high-energy processes and particle acceleration can be investigated. They are the only objects for which significant X-ray polarization was detected in the past. Here we present the Imaging X-ray Polarimetry Explorer (IXPE) observation of the Crab pulsar and nebula. The total pulsar pulsed emission in the [2–8] keV energy range is unpolarized.