Stability of the Cyclotron Resonance Scattering Feature in Hercules X‐1 withRXTE | Zendy

D. E. Gruber | Zendy; W. A. Heindl | Zendy; R. E. Rothschild | Zendy; W. Coburn | Zendy; R. Staubert | Zendy; I. Kreykenbohm | Zendy; J. Wilms | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Stability of the Cyclotron Resonance Scattering Feature in Hercules X‐1 withRXTE

Author(s) -

D. E. Gruber,

W. A. Heindl,

R. E. Rothschild,

W. Coburn,

R. Staubert,

I. Kreykenbohm,

J. Wilms

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/323487

Subject(s) - physics , neutron star , pulsar , scattering , astrophysics , cyclotron resonance , cyclotron , spectral line , magnetic field , astronomy , optics , quantum mechanics

Five observations of the hard X-ray spectrum of Her X-1 from \xte show thatthe $\sim 41$ keV energy of the cyclotron scattering line is constant withinstatistics of a few percent per observtion. Comparison with other observationsover many years indicates strongly that the centroid energy of this absorptionline has increased some time between 1991 and 1993 by 23%, from 34 keV to 41keV. Moreover, the cutoff energy of the spectral continuum increased at thesame time from 16 keV to 20 keV, which is, within the statistical error of 5%,in direct proportion to the centroid. This may be a sign thatboth thesecharacteristics of the spectrum are controlled in the same way by the magneticfield strength in the region of scattering.Comment: 30 page, 5 figure

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research