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- Tyndall National InstituteIE88 papers
- Centre National de la Recherche ScientifiqueFR56 papers
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- Okinawa Institute of Science and Technology Graduate UniversityJP46 papers
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- Center for Astrophysics Harvard & SmithsonianUS34 papers
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7 papers · 2 filters
HST/ACS Imaging of Omega Centauri: Optical Counterpart for the Quiescent Low-Mass X-Ray Binary
D. Haggard, A. M. Cool, J. Anderson +5
We report the discovery of an optical counterpart to a quiescent neutron star in the globular cluster Omega Centauri (NGC 5139). The star was found as part of our wide-field imagin…
Timing and spectral studies of LMC X-4 in high and low states with Beppo-SAX: Detection of pulsations in the soft spectral component
S. Naik, B. Paul
We report here detailed timing and spectral analysis of two Beppo-SAX observations of the binary X-ray pulsar LMC X-4 carried out during the low and high states of its 30.5 days lo…
The Radio Structure of High-Energy Peaked BL Lacertae Objects
T. A. Rector, D. C. Gabuzda, J. T. Stocke
We present VLA and first-epoch VLBA observations that are part of a program to study the parsec-scale radio structure of a sample of fifteen high-energy-peaked BL Lacs (HBLs). The…
Time-resolved Spectroscopy of the M15 X-ray Binary AC211/X2127+119
M. A. P. Torres, P. J. Callanan, M. R. Garcia
We present time-resolved spectroscopy acquired during two epochs (spaced apart by ~15 days) of the eclipsing Low Mass X-ray Binary AC211/X2127+119 in the globular cluster M15. The…
Magnetic Field Geometry in "Red" and "Blue" BL Lacs
P. Kharb, D. C. Gabuzda, P. Shastri
We compare the systematics of the magnetic field geometry in the "red" low-energy peaked BL Lacs (LBLs) and "blue" high-energy peaked BL Lacs (HBLs) using VLBI polarimetric images.…
Pc-scale study of Radio galaxies & BL Lacs
P. Kharb, P. Shastri, D. C. Gabuzda
We study two aspects of the differences between Active Galactic Nuclei (AGN) of the two Fanaroff-Riley types in order to investigate the causes of the F-R divide. We (a) contrast t…