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63 papers · 1 filter
Exceptional Point Dynamics in Photonic Honeycomb Lattices with PT Symmetry
Hamidreza Ramezani, Tsampikos Kottos, Vassilios Kovanis +1
We theoretically investigate the flow of electromagnetic waves in complex honeycomb photonic lattices with local PT symmetries. Such PT structure is introduced via a judicious arra…
WISE/NEOWISE observations of Active Bodies in the Main Belt
James M. Bauer, A. K. Mainzer, Tommy Grav +22
We report results based on mid-infrared photometry of 5 active main belt objects (AMBOs) detected by the Wide-field Infrared Survey Explorer (WISE) spacecraft. Four of these bodies…
Conductivity imaging from one interior measurement in the presence of perfectly conducting and insulating inclusions
Amir Moradifam, Adrian Nachman, Alexandru Tamasan
We consider the problem of recovering an isotropic conductivity outside some perfectly conducting or insulating inclusions from the interior measurement of the magnitude of one cur…
Search for radial velocity variations in eight M-dwarfs with NIRSPEC/Keck II
Florian Rodler, Rohit Deshpande, Maria Rosa Zapatero Osorio +4
Context. Radial velocity (RV) measurements from near-infrared spectra have become a potentially powerful tool to search for planets around cool stars and sub-stellar objects. As pa…
Impact of Calcium on Transport Property of Graphene
Jyoti Katoch, Masa Ishigami
We have measured the impact of calcium adsorbates on the transport property of graphene. Although calcium renders conductivity linearly dependent on the carrier density of graphene…
Thermal emission at 3.6-8 micron from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star
D. R. Anderson, A. M. S. Smith, N. Madhusudhan +12
We report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 micron. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two…