9 papers
New Deep Radio Continuum Imaging Still Indicates a Large Reservoir of Undiscovered Millisecond Pulsars in Terzan 5
Ryan Urquhart, Jay Strader, Laura Chomiuk +4
We present the deepest and highest-resolution radio continuum imaging of the Galactic globular cluster Terzan 5, one of the most crowded locations in the radio sky. In these new 2$…
The Complex Multi-Wavelength Morphology of the Peculiar Compact Galaxy Group IC 2431
Beverly J. Smith, Roberto Soria, Douglas Swartz +3
We present new Chandra X-ray imaging spectroscopy of the compact galaxy group IC 2431, and compare with archival ultraviolet, optical, infrared, and radio images. IC 2431 is a star…
X-ray Constraints on Wandering Black Holes in Stripped Galaxy Nuclei in the Halo of NGC 5128
S. L. Feyan, R. Urquhart, J. Strader +6
A subset of galaxies have dense nuclei, and when these galaxies are accreted and tidally stripped, the nuclei can masquerade as globular clusters in the halos of large galaxies. If…
A 34 Yr Timing Solution of the Redback Millisecond Pulsar Terzan 5A
Alexandra C. Rosenthal, Scott M. Ransom, Kyle A. Corcoran +12
We present a 34-year timing solution of the redback pulsar system Terzan 5A (Ter5A). Ter5A, also known as B174424A or J17482446A, has a 11.56 ms pulse period, a 0.1 sol…
Multiwavelength Evidence for Two New Candidate Transitional Millisecond Pulsars in the Sub-luminous Disk State: 4FGL J0639.1--8009 and 4FGL J1824.2+1231
Rebecca Kyer, Subhroja Roy, Jay Strader +4
We report the discovery of two new Galactic accreting compact objects consistent with the respective positions of the unassociated Fermi-LAT gamma-ray sources 4FGL J0639.1--8009 an…
PSR J1947-1120: A New Huntsman Millisecond Pulsar Binary
Jay Strader, Paul S. Ray, Ryan Urquhart +11
We present the discovery of PSR J1947-1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 d orbit. This pulsar was found via optical, X-ray, and radio…