14 citations · 55 across the 9 of their papers we have counts for
9 papers
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…
Optical Counterparts to X-ray sources in LSST DP1
Yuankun, Wang, Eric C. Bellm +9
We present a crossmatch between a combined catalog of X-ray sources and the Vera C. Rubin Observatory Data Preview 1 (DP1) to identify optical counterparts. The six fields targeted…
Variable radio emission of neutron star X-ray binary Ser X-1 during its persistent soft state
E. C. Pattie, T. J. Maccarone, A. J. Tetarenko +3
Ser X-1 is a low mass neutron star X-ray binary and has been persistently accreting since its discovery in the 1960s. It has always been observed to be in a soft spectral state and…
Ultra-deep ATCA imaging of 47 Tucanae reveals a central compact radio source
Alessandro Paduano, Arash Bahramian, James C. A. Miller-Jones +9
We present the results of an ultra-deep radio continuum survey, containing hours of observations, of the Galactic globular cluster 47 Tucanae with the Australia Telescope…
A candidate magnetic helium core white dwarf in the globular cluster NGC 6397
Manuel Pichardo Marcano, Liliana E. Rivera Sandoval, Thomas J. Maccarone +5
We report a peculiar variable blue star in the globular cluster NGC 6397, using Hubble Space Telescope optical imaging. Its position in the colour-magnitude diagrams, and its spect…
Strongly magnetized accretion in two ultracompact binary systems
Thomas J. Maccarone, Thomas Kupfer, Edgar Najera Casarrubias +5
We present the discoveries of two of AM CVn systems, Gaia14aae and SDSS~J080449.49+161624.8, which show X-ray pulsations at their orbital periods, indicative of magnetically collim…
The Fast Evolving, Tremendous and Blue Superoutburst in ASASSN-21au Reveals a Dichotomy in the Outbursts of Long-period AM CVns
L. E. Rivera Sandoval, C. O. Heinke, J. M. Hameury +4
ASASSN-21au is an ultracompact accreting white dwarf binary (AM CVn) with a period of approx. 58 min. Using multiwavelength observations of the system, we discovered a dichotomy in…
Extreme Quiescent Variability of the Transient Neutron Star Low-mass X-ray Binary EXO 1745-248 in Terzan 5
L. E. Rivera Sandoval, R. Wijnands, N. Degenaar +9
EXO 1745-248 is a transient neutron-star low-mass X-ray binary that resides in the globular cluster Terzan 5. We studied the transient during its quiescent state using 18 Chandra o…
Mid-UV Studies of the Transitional Millisecond Pulsars XSS J12270-4859 and PSR J1023+0038 During Their Radio Pulsar States
L. E. Rivera Sandoval, J. V. Hernandez Santisteban, N. Degenaar +7
We report mid-UV (MUV) observations taken with HST/WFC3, Swift/UVOT and GALEX/NUV of the transitional millisecond pulsars XSS J12270-4859 and PSR J1023+0038 during their radio puls…