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Astron. Astrophys. 333, L55-L58 (1998)

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Letter to the Editor

Detection of an X-ray pulsed signal from the supernova remnant N157B in the Large Magellanic Cloud

G. Cusumano 1, M.C. Maccarone 1, T. Mineo 1, B. Sacco 1, E. Massaro 2, R. Bandiera 3 and M. Salvati 3

1 Istituto di Fisica Cosmica ed Applicazioni all' Informatica, CNR, Via U. La Malfa 153, I-90146 Palermo, Italy
2 Istituto Astronomico, Unità GIFCO Roma-1, Università "La Sapienza", Via G.M. Lancisi 29, I-00161, Roma, Italy
3 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy

Received 18 March 1998 / Accepted 24 March 1998


The supernova remnant N157B was in the field of view during an observation of the LMC with the BeppoSAX satellite. A signal with a 16 ms periodicity was detected in the MECS data. The pulse profile is characterized by a single narrow peak with a flux of (5.1 [FORMULA] 1.1) [FORMULA] 10-13 erg cm-2 s-1. In this paper the dynamical state of the plerion-shell system is discussed, and inferences are drawn on the optical luminosity of the pulsar and the plerion.

Key words: stars – stars: neutron – pulsars: individual – X-rays: stars

SIMBAD Objects


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© European Southern Observatory (ESO) 1998

Online publication: April 20, 1998