TY - JOUR
AU - Poutanen, Juri
AB - Deep NuSTAR observation of X-ray pulsar A 0535+262, performed at a very low luminosity of ∼7 × 1034 erg s−1, revealed the presence of two spectral components. We argue that the high-energy component is associated with cyclotron emission from recombination of electrons collisionally excited to the upper Landau levels. The cyclotron line energy of Ecyc = 47.7 ± 0.8 keV was measured at the luminosity of almost an order of magnitude lower than what was achieved before. The data firmly exclude a positive correlation of the cyclotron energy with the mass accretion rate in this source.
TI - Cyclotron emission, absorption, and the two faces of X-ray pulsar A 0535+262
JF - Monthly Notices of the Royal Astronomical Society Letters
DO - 10.1093/mnrasl/slz079
DA - 2019-05-24
UR - https://www.deepdyve.com/lp/oxford-university-press/cyclotron-emission-absorption-and-the-two-faces-of-x-ray-pulsar-a-0535-3gQVRn6PtJ
SP - L30
EP - L34
VL - 487
IS - 1
DP - DeepDyve
ER -