1210.4680 (H. Tong et al.)

Is magnetar a fact or fiction to us?    [PDF]

H. Tong, R. X. Xu

The key point of studying AXPs/SGRs (anomalous X-ray pulsars/soft gamma-ray repeaters) is relevant to the energy budget. Historically, rotation was thought to be the only free energy of pulsar until the discovery of accretion power in X-ray binaries. AXPs/SGRs could be magnetars if they are magnetism-powered, but would alternatively be quark-star/fallback-disk systems if more and more observations would hardly be understood in the magnetar scenario.

View original: http://arxiv.org/abs/1210.4680