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50 papers · 2 filters
Activity from Magnetar Candidate 4U 0142+61: Bursts and Emission Lines
Fotis P. Gavriil, Rim. Dib, Victoria M. Kaspi
After 6 years of quiescence, Anomalous X-ray Pulsar (AXP) 4U 0142+61 entered an active phase in 2006 March that lasted several months. During the active phase, several bursts were…
Red Noise in Anomalous X-ray Pulsar Timing Residuals
Anne M. Archibald, Rim Dib, Margaret A. Livingstone +1
Anomalous X-ray Pulsars (AXPs), thought to be magnetars, exhibit poorly understood deviations from a simple spin-down called "timing noise". AXP timing noise has strong low-frequen…
Local Void vs Dark Energy: Confrontation with WMAP and Type Ia Supernovae
Stephon Alexander, Tirthabir Biswas, Alessio Notari +1
It is now a known fact that if we happen to be living in the middle of a large underdense region, then we will observe an "apparent acceleration", even when any form of dark energy…
Millihertz Oscillation Frequency Drift Predicts the Occurrence of Type I X-ray Bursts
D. Altamirano, M. van der Klis, R. Wijnands +1
Millihertz quasi-periodic oscillations reported in three neutron-star low mass X-ray binaries have been suggested to be a mode of marginally stable nuclear burning on the neutron s…
First superburst from a classical low-mass X-ray binary transient
L. Keek, J. J. M. in 't Zand, E. Kuulkers +3
We report the analysis of the first superburst from a transiently accreting neutron star system with the All-Sky Monitor (ASM) on the Rossi X-ray Timing Explorer. The superburst oc…
Science With The Australian Square Kilometre Array Pathfinder
Simon Johnston
The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive…