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Astron. Astrophys. 354, 567-572 (2000)

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Rossi XTE and Beppo SAX observations of the Be/neutron star system RX J0146.9+6121

S. Mereghetti 1, A. Tiengo 1,2, G.L. Israel  *  3 and L. Stella[FORMULA]  3

1 Istituto di Fisica Cosmica "G.Occhialini", Via Bassini 15, 20133 Milano, Italy
2 Dipartimento di Fisica, Università di Milano, Via Celoria 16, 20133 Milano, Italy
3 Osservatorio Astronomico di Roma, Via dell'Osservatorio 2, 00040 Monteporzio Catone (Roma), Italy

Received 19 July 1999 / Accepted 2 December 1999


We report Rossi XTE and Beppo SAX observations of the X-ray pulsar RX J0146.9+6121, the neutron star/Be binary system with the longest known spin period.

Data obtained one month after the most recent outburst (July 1997), show that the source has returned to its normal luminosity of a few 1034 erg s-1 while spin-up continued at an average rate of [FORMULA] s s-1.

Key words: stars: individual: RX J0146.9+6121 – X-rays: stars

* Affiliated to I.C.R.A.

Send offprint requests to: S. Mereghetti (sandro@ifctr.mi.cnr.it)

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© European Southern Observatory (ESO) 2000

Online publication: February 9, 2000