Integral observes possible cyclotron line at 47 keV for 1A 0535+262

Details Integral observes possible cyclotron line at 47 keV for 1A 0535+262 Integral observes possible cyclotron line at 47 keV for 1A 0535+262

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..601....1k&link_type=abstract

The Astronomer's Telegram, #601

Other

13

X-Ray, Gamma Ray, Neutron Stars, Pulsars, Transients

Scientific paper

The Be/X-ray binary 1A 0535+262 is known as the accreting X-ray pulsar with the highest observed magnetic field. Usually the field strength is quoted as approx. 1O^13 G, based on the strong cyclotron line feature at ~110 keV observed by CGRO/OSSE during a giant outburst in 1994 (Grove et al., 1995, ApJ 438, L25). Observations by HEXE and TTM on Mir/Kvant of another giant outburst in 1989 had indicated cyclotron line features at ~50 and ~100 keV but the lower energy feature was of low significance (Kendziorra et al., 1994, A&A 291, L31).

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