A&A 383, 916-918 (2002)
DOI: 10.1051/0004-6361:20011839

Timing analysis of the core of the Crab-like SNR G21.5-0.9

N. La Palombara and S. Mereghetti

Istituto di Fisica Cosmica "G. Occhialini", via Bassini 15, 20133 Milano, Italy

(Received 15 October 2001 / Accepted 18 December 2001 )

Abstract
The Crab-like SNR G21.5-0.9 was observed in the X-ray band (0.5-10 keV) by the XMM-Newton satellite for over 100 ks. The large effective area of the EPIC instrument has allowed us to perform a deep search for pulsations from the central core of G21.5-0.9. No pulsations were found with upper limits on the pulsed fraction between 7.5% and 40% (depending on frequency and energy range).

Key words: ISM: individual: G21.5-0.9 -- supernova remnants -- X-rays: ISM

Offprint request: N. La Palombara, nicola@ifctr.mi.cnr.it

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