837 citations · 19.2k across the 257 of their papers we have counts for
10 papers · 1 filter
The Central Kinematics and Black Hole Mass of 4C+37.11
Tirth Surti, Roger W. Romani, Julia Scharwächter +2
We report on IFU measurements of the host of the radio source 4C+37.11. This massive elliptical contains the only resolved double compact nucleus at pc-scale separation, likely a b…
Ultra-Low Frequency Gravitational Waves from Massive Clusters at z~1
David K. Wendt, Roger W. Romani
Recent progress with pulsar timing array experiments, especially from the NANOGrav collaboration indicate that we are on the cusp of detecting significant signals from the inspiral…
Constraining the Orbit of Supermassive Black Hole Binary 0402+379
Karishma Bansal, Greg B. Taylor, Alison. B. Peck +2
The radio galaxy 0402+379 is believed to host a supermassive black hole binary (SMBHB). The two compact core sources are separated by a projected distance of 7.3 pc, making it the…
Compact Symmetric Objects and Supermassive Binary Black Holes in the VLBA Imaging and Polarimetry Survey
S. E. Tremblay, G. B. Taylor, A. A. Ortiz +3
We present multi-frequency Very Long Baseline Array (VLBA) follow-up observations of VLBA Imaging and Polarimetry Survey sources identified as likely compact symmetric objects (CSO…
Imaging Redshift Estimates for Fermi BL Lacs
Matt Stadnik, Roger W. Romani
We have obtained WIYN and SOAR i' images of BL Lacertae objects (BL Lacs) and used these to detect or constrain the flux of the host galaxy. Under common standard candle assumption…
A Multi-wavelength Study of the Host Environment of SMBHB 4C+37.11
Roger W. Romani, W. R. Forman, Christine Jones +4
4C+37.11, at z=0.055 shows two compact radio nuclei, imaged by VLBI at 7mas separation, making it the closest known resolved super-massive black hole binary (SMBHB). An important q…
Radio and Gamma-Ray Constraints on the Emission Geometry and Birthplace of PSR J2043+2740
A. Noutsos, A. A. Abdo, M. Ackermann +146
We report on the first year of Fermi gamma-ray observations of pulsed high-energy emission from the old PSR J2043+2740. The study of the gamma-ray efficiency of such old pulsars gi…
Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
LAT Collaboration
Pulsars are rapidly-rotating, highly-magnetized neutron stars emitting radiation across the electromagnetic spectrum. Although there are more than 1800 known radio pulsars, until r…
Radio detection of LAT PSRs J1741-2054 and J2032+4127: no longer just gamma-ray pulsars
F. Camilo, P. S. Ray, S. M. Ransom +24
Sixteen pulsars have been discovered so far in blind searches of photons collected with the Large Area Telescope on the Fermi Gamma-ray Space Telescope. We here report the discover…
Identifying Compact Symmetric Objects from the VLBA Imaging and Polarization Survey
S. E. Tremblay, G. B. Taylor, J. F. Helmboldt +2
Compact Symmetric Objects (CSOs) are small (less than 1 kpc) radio sources which have symmetric double lobes or jets. The dominant theory for the small size of these objects is tha…