Coherent Emission from Magnetars
نویسندگان
چکیده
منابع مشابه
Coherent Emission from Magnetars
It is proposed that magnetospheric currents above the surfaces of magnetars radiate coherent emission in analogy to pulsars. Scaling the magnetospheric parameters suggests that the coherent emission from magnetars would emerge in the infra-red or optical. Pulsar radio emission and molecular masers are two examples of naturally occurring coherent emission. But there is no accepted analogue in th...
متن کاملRadio Emission from Magnetars
We discuss properties of the expected radio emission from Soft Gamma-ray Repeaters (SGRs) during their bursting activity in the framework of the model of Thompson, Lyutikov and Kulkarni (2002), in which the high energy emission is powered by the dissipation of super-strong magnetic fields in the magnetospheres through reconnection-type events. Drawing on analogies with Solar flares we predict t...
متن کاملHigh-energy Emission from Magnetars
The recently discovered soft gamma-ray emission from the anomalous X-ray pulsar 1E 1841-045 has a luminosity Lγ ∼ 1036 ergs s−1. This luminosity exceeds the spindown power by three orders of magnitude and must be fed by an alternative source of energy such as an ultrastrong magnetic field. A gradual release of energy in the stellar magnetosphere is expected if it is twisted and a strong electri...
متن کاملA Model for the Optical/Infrared Emission from Magnetars
A number of Anomalous X-ray Pulsars (AXPs) have recently been detected in the optical/IR wavelengths. We use their inferred brightness to place general constraints on any model for this emission within the magnetar framework. We find that neutron-star surface emission cannot account for the observations and that the emission must be magnetospheric in origin. We propose a model for the optical/I...
متن کاملResonant Cyclotron Scattering in Magnetars’ Emission
We present a systematic fit of a model of resonant cyclotron scattering (RCS) to the X-ray data of ten magnetars, including canonical and transient anomalous X-ray pulsars, and soft gamma repeaters. In this scenario, non-thermal magnetar spectra in the soft X-rays (i.e. below ∼ 10 keV) result from resonant cyclotron scattering of the thermal surface emission by hot magnetospheric plasma. We fin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2002
ISSN: 0004-637X,1538-4357
DOI: 10.1086/344564