31 papers
A Real-Time Jet Laboratory in Swift J1727.8-1613
Callan M. Wood, James C. A. Miller-Jones, Arash Bahramian +16
We present the results of our intensive VLBI campaign on the black-hole low-mass X-ray binary (LMXB) Swift J1727.8-1613 during its 2023-2024 outburst. We observed the repeated quen…
A new likely pulsar binary in 47~Tucanae from continuum searches
Thomas J. Maccarone, Alessandro Paduano, Arash Bahramian +6
We present evidence that the X-ray source 47~Tuc~W41, long considered to be an X-ray source powered by coronal activity, is actually a redback pulsar binary. The source continually…
The Homogeneous MeerKAT and Swift/XRT X-ray Binary Radio:X-ray Plane
Justine Crook-Mansour, Rob Fender, Andrew Hughes +22
During the hard and quiescent spectral states in X-ray binaries, a non-linear correlation is observed between radio and X-ray luminosities, providing a valuable tool to probe the c…
Exploring LSST's capabilities for early detection of outbursts in low-mass X-ray binaries
Susmita Sett, Arash Bahramian, Kristen Dage +2
Following long periods of quiescence, low-mass X-ray binaries can exhibit intense X-ray outbursts triggered by instabilities within the accretion disk. These outbursts can sometime…
Reconciling the Systemic Kicks of Observed Millisecond Pulsars, Spider Pulsars, and Low-mass X-ray Binaries
Paul Disberg, Arash Bahramian, Ilya Mandel
Millisecond pulsars (MSPs) have been proposed as evolutionary products of low-mass X-ray binaries (LMXBs) through a stage in which they are spider pulsars (i.e., redbacks and black…
MWA tied-array processing V: Super-resolved localisation via amplitude-only maximum likelihood direction finding
Bradley W. Meyers, Arash Bahramian
Interferometric localisation of transients and pulsars via tied-array beam processing is challenging and can be limited by the native spatial resolution achievable by the instrumen…