We report the detection of a cyclotron absorption line and its second harmonic in the average spectrum of the high mass X-ray binary 4U1907+09 observed by the BeppoSAX satellite. The broad band spectral capability of BeppoSAX allowed a good determination of the continuum against which the two absorption features are evident at similar to 19 and similar to 39 keV. Correcting for the gravitational redshift of a similar to 1.4 M-circle dot neutron star, the inferred surface magnetic field strength is B-surf = 2.1 x 10(12) G. (C) 2000 COSPAR. Published by Elsevier Science Ltd.

BeppoSAX observation of 4U 1907+09: Detection of a cyclotron line and its second harmonic.

BURDERI, LUCIANO;
2000-01-01

Abstract

We report the detection of a cyclotron absorption line and its second harmonic in the average spectrum of the high mass X-ray binary 4U1907+09 observed by the BeppoSAX satellite. The broad band spectral capability of BeppoSAX allowed a good determination of the continuum against which the two absorption features are evident at similar to 19 and similar to 39 keV. Correcting for the gravitational redshift of a similar to 1.4 M-circle dot neutron star, the inferred surface magnetic field strength is B-surf = 2.1 x 10(12) G. (C) 2000 COSPAR. Published by Elsevier Science Ltd.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/32908
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact