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IKT 16 aka PSR J0058-7218: discovery of a 22 ms energetic rotation-powered pulsar in the Small Magellanic Cloud

MPG-Autoren
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Maitra,  C.
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Haberl,  F.
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;

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Zitation

Maitra, C., Esposito, P., Tiengo, A., Ballet, J., Haberl, F., Dai, S., et al. (2021). IKT 16 aka PSR J0058-7218: discovery of a 22 ms energetic rotation-powered pulsar in the Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society: Letters, 507(1), L1-L5. doi:10.1093/mnrasl/slab050.


Zitierlink: https://hdl.handle.net/21.11116/0000-0009-D775-1
Zusammenfassung
We report here on the discovery with XMM–Newton of pulsations at 22 ms from the central compact source associated with IKT 16, a supernova remnant in the Small Magellanic Cloud (SMC). The measured spin period and spin period derivative correspond to 21.7661076(2) ms and 2.9(3) × 10−14 s s−1, respectively. Assuming standard spin-down by magnetic dipole radiation, the spin-down power corresponds to 1.1 × 1038 erg s−1 implying a Crab-like pulsar. This makes it the most energetic pulsar discovered in the SMC so far and a close analogue of PSR J0537–6910, a Crab-like pulsar in the Large Magellanic Cloud. The characteristic age of the pulsar is 12 kyr. Having for the first time a period measure for this source, we also searched for the signal in archival data collected in radio with the Parkes telescope and in γ-rays with the Fermi/LAT, but no evidence for pulsation was found in these energy bands.