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264 papers · 1 filter
Noise Budget and Interstellar Medium Mitigation Advances in the NANOGrav Pulsar Timing Array
T. Dolch, S. Chatterjee, J. M. Cordes +9
Gravitational wave (GW) detection with pulsar timing arrays (PTAs) requires accurate noise characterization. The noise of our Galactic-scale GW detector has been systematically eva…
The Taurus Boundary of Stellar/Substellar (TBOSS) Survey II. Disk Masses from ALMA Continuum Observations
K. Ward-Duong, J. Patience, J. Bulger +9
We report 885m ALMA continuum flux densities for 24 Taurus members spanning the stellar/substellar boundary, with spectral types from M4 to M7.75. Of the 24 systems, 22 are dete…
Experimental Indicators of Accretion Processes in Active Galactic Nuclei
A. Eckart, M. Valencia-S., B. Shahzamanian +19
Bright Active Galactic Nuclei are powered by accretion of mass onto the super massive black holes at the centers of the host galaxies. For fainter objects star formation may signif…
An image-based search for pulsars among Fermi unassociated LAT sources
D. A. Frail, P. S. Ray, K. P. Mooley +9
We describe an image-based method that uses two radio criteria, compactness and spectral index, to identify promising pulsar candidates among Fermi Large Area Telescope (LAT) unass…
Fast, Collimated Outflow in the Western Nucleus of Arp 220
Loreto Barcos-Muñoz, Susanne Aalto, Todd A. Thompson +6
We present the first spatially and spectrally resolved image of the molecular outflow in the western nucleus of Arp\,220. The outflow, seen in HCN~(1--0) by ALMA, is compact and co…
Spatially Resolved Dust, Gas, and Star Formation in the Dwarf Magellanic Irregular NGC4449
D. Calzetti, G. W. Wilson, B. T. Draine +17
We investigate the relation between gas and star formation in sub-galactic regions, ~360 pc to ~1.5 kpc in size, within the nearby starburst dwarf NGC4449, in order to separate the…