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16 papers · 2 filters
Radiative corrections to the neutron star mass inferred from QPO frequencies
M. A. Abramowicz, W. Kluźniak, W. Yu
The frequencies of kHz QPOs are widely interpreted as being indicative of the values of characteristic frequencies related to orbital motion around neutron stars, e.g., the radial…
Subaru constraint on circular polarization in I-band emission from the Magnetar 4U 0142+61
Z. Wang, Y. T. Tanaka, J. Zhong
We present the first imaging circular polarimetry of the anomalous X-ray pulsar (AXP) 4U 0142+61 at optical wavelengths. The AXP is the only magnetar that has been well studied at…
The gamma-ray emitting region of the jet in Cyg X-3
Andrzej A. Zdziarski, Marek Sikora, Guillaume Dubus +3
We study models of the gamma-ray emission of Cyg X-3 observed by Fermi. We calculate the average X-ray spectrum during the gamma-ray active periods. Then, we calculate spectra from…
The radio core and jet in the broad absorption line quasar PG 1700+518
J. Yang, F. Wu, Z. Paragi +1
The blue-shifted broad absorption lines (BAL) or troughs are observed in Active Galactic Nuclei (AGNs) when our line of sight is intercepted by a high speed outflow (wind), likely…
Electron and positron pair production of compact stars
Wen-Biao Han, Remo Ruffini, She-Sheng Xue
Neutral stellar core at or over nuclear densities is described by a positive charged baryon core and negative charged electron fluid since they possess different masses and interac…
A Uniform Correlation between Synchrotron Luminosity and Doppler Factor in Gamma-ray Bursts and Blazars: hint of similar intrinsic luminosities?
Qingwen Wu, Yuan-Chuan Zou, Xinwu Cao +2
We compile 23 Gamma-ray Bursts (GRBs) and 21 blazars with estimated Doppler factors, and the Doppler factors of GRBs are estimated from their Lorentz factors by assuming their jet…