Results 41 to 50 of about 157,814 (199)

Room temperature mid-IR single photon spectral imaging [PDF]

, 2012
Spectral imaging and detection of mid-infrared (mid-IR) wavelengths are emerging as an enabling technology of great technical and scientific interest; primarily because important chemical compounds display unique and strong mid-IR spectral fingerprints ...
AH Firester, C Daffara, C Pedersen, Christian Pedersen, DC Fernandez, E Pomarico, F Devaux, G Song, H Amrania, J Falk, J Houghton, J Li, J Warner, JE Midwinter, Jeppe Seidelin Dam, JF Weller, JR Schwesyg, JS Dam, JS Dam, K Huang, KF Hulme, KJ Kubarych, MF DeCamp, MJ Nee, MN Abedin, MR McCurdy, Peter Tidemand-Lichtenberg, PM Vaughan, RA Andrews, RW Boyd, S Baldelli, S Brustlein, S Kim, W Chiou, WH Louisell   +34 more
core   +2 more sources

Spitzer Observations of GX17+2: Confirmation of a Periodic Synchrotron Source [PDF]

, 2011
GX17+2 is a low-mass X-ray binary (LMXB) that is also a member of a small family of LMXBs known as "Z-sources" that are believed to have persistent X-ray luminosities that are very close to the Eddington limit. GX17+2 is highly variable at both radio and
Bornak, Jillian, Gelino, Christopher R., Gelino, Dawn M., Harrison, Thomas E., McNamara, Bernard J., Rupen, Michael P., Wachter, Stefanie   +6 more
core   +1 more source

Coherent light-emitting metasurfaces based on bound states in the continuum

Nanophotonics
An emergent need exists for solid state tunable coherent light emitters in the mid-infrared range for spectroscopy, sensing, and communication applications where current light sources are dominated by spontaneous emitters.
Farazi Soheil, Tadigadapa Srinivas
doaj   +1 more source

Mid-infrared Selection of Active Galactic Nuclei with the Wide-Field Infrared Survey Explorer. I. Characterizing WISE-selected Active Galactic Nuclei in COSMOS [PDF]

, 2012
The Wide-field Infrared Survey Explorer (WISE) is an extremely capable and efficient black hole finder. We present a simple mid-infrared color criterion, W1 – W2 ≥ 0.8 (i.e., [3.4]–[4.6] ≥0.8, Vega), which identifies 61.9 ± 5.4 active galactic nucleus ...
Assef, Roberto J., Benford, Dominic J., Blain, Andrew, Cutri, Roc, Dey, Arjun, Einsenhardt, Peter R. M., Griffith, Roger L., Harrison, Fiona, Jarrett, T. H., Lake, Sean, Madsen, Kristin, Masci, Frank, Petty, Sara, Stanford, S. A., Stern, Daniel, Tsai, Chao-Wei, Wright, E. L., Yan, Lin   +17 more
core   +1 more source

Tunable mid-infrared source of light carrying orbital angular momentum in the femtosecond regime

Optics Letters, 2017
We report on a tunable intense femtosecond mid-infrared (mid-IR) light source carrying orbital angular momentum (OAM). Our setup is based on an optical parametric amplification system with an 800 nm pump shaped with a spiral phase plate. We confirm the anisotropic OAM transfer from the pump to the idler through stimulated difference frequency ...
Camper, Antoine, Park, Hyunwook, Lai, Yu Hang, Kageyama, Hiroyuki, Li, Sha, Talbert, Bradford K., Blaga, Cosmin I., Agostini, Pierre, Ruchon, Thierry, Dimauro, Louis F.   +9 more
openaire   +3 more sources

Dispersion-Engineered Step-Index Tellurite Fibers for Mid-Infrared Coherent Supercontinuum Generation from 1.5 to 4.5 μm with Sub-Nanojoule Femtosecond Pump Pulses

Applied Sciences, 2018
Mid-infrared supercontinuum generation from 1.5 to 4.5 µm with sub-nanojoule femtosecond pump pulses is demonstrated by using a short segment of dispersion-engineered step-index tellurite fiber with very low OH content.
Paul Froidevaux, Arnaud Lemière, Bertrand Kibler, Frédéric Désévédavy, Pierre Mathey, Grégory Gadret, Jean-Charles Jules, Kenshiro Nagasaka, Takenobu Suzuki, Yasutake Ohishi, Frédéric Smektala   +10 more
doaj   +1 more source

A Model for (Quasi-)Periodic Multiwavelength Photometric Variability in Young Stellar Objects [PDF]

, 2016
We present radiation transfer models of rotating young stellar objects (YSOs) with hotspots in their atmospheres, inner disk warps and other 3-D effects in the nearby circumstellar environment.
Aarnio A. N., Adams F. C., Akeson R. L., Aurora Y. Kesseli, Barbara A. Whitney, Bertout C., Cho J., Cody A. M., Gregory S. G., Gregory S. G., Gullbring E., Herczeg G. J., Ingleby L., J. R. Stauffer, Kenneth Wood, L. A. Hillenbrand, L. Rebull, M. Morales-Calderon, Mahdavi A., Matt S., Maya A. Petkova, Mohanty S., Morales-Calderón M., Morales-Calderón M., Muzerolle J., Rebull L. M., Rebull L. M., Robitaille T. P., Romanova M. M., S. H. P. Alencar, Scott G. Gregory, Stassun K. G., Stauffer J., Stauffer J., Whitney B. A., Whitney B. A., Whitney B. A., Wood K., Wood K.   +38 more
core   +4 more sources

Near-infrared Linear Polarization of Ultracool Dwarfs

, 2011
We report on near-infrared J- and H-band linear polarimetric photometry of eight ultracool dwarfs (two late-M, five L0-L7.5, and one T2.5) with known evidence for photometric variability due to dust clouds, anomalous red infrared colors, or low-gravity ...
A. Manchado, Allers, Allers, Alves, Ardila, Artigau, Artigau, B. Goldman, Basri, Bernat, Blake, Burgasser, Burrows, Chabrier, Cieza, Cruz, Fazio, Gelino, Gizis, Golimowski, Gorlova, Hashimoto, Herczeg, J. A. Acosta-Pulido, J. A. Caballero, Jayawardhana, Jayawardhana, K. Peña Ramírez, Kandori, Kirkpatrick, Kirkpatrick, Knapp, Kraus, Kusakabe, Leggett, Luhman, Luhman, M. R. Zapatero Osorio, Marley, Martín, McGovern, McLean, McLean, Mohanty, Mohanty, Morales-Calderón, Muzerolle, Patten, R. Rebolo, Reiners, Reiners, Rieke, Schmidt, Scholz, Sengupta, Sengupta, Sengupta, Simmons, Skrutskie, Stauffer, V. J. S. Béjar, Wright, Wright, Zapatero Osorio, Zapatero Osorio, Zapatero Osorio   +65 more
core   +1 more source

Observed Variability at 1um and 4um in the Y0 Brown Dwarf WISEP J173835.52+273258.9 [PDF]

, 2016
We have monitored photometrically the Y0 brown dwarf WISEP J173835.52+273258.9 (W1738) at both near- and mid-infrared wavelengths. This ~1 Gyr-old 400K dwarf is at a distance of 8pc and has a mass around 5 M_Jupiter.
Carey, S. J., Cushing, Michael C., Fortney, J. J., Gelino, C. R., Gizis, J. E., Hardegree-Ullman, Kevin K., Kirkpatrick, J. D., Leggett, S. K., Mace, G. N., Marley, M. S., Morley, Caroline V., Saumon, D., Trucks, Jesica L.   +12 more
core   +2 more sources

A diversity of dusty AGN tori: Data release for the VLTI/MIDI AGN Large Program and first results for 23 galaxies

, 2013
The AGN-heated dust distribution (the "torus") is increasingly recognized not only as the absorber required in unifying models, but as a tracer for the reservoir that feeds the nuclear Super-Massive Black Hole.
Burtscher, Leonard, Davies, Richard I., Hönig, Sebastian F., Jaffe, Walter, Kishimoto, Makoto, Meisenheimer, Klaus, Pott, Jörg-Uwe, Röttgering, Huub, Schartmann, Marc, Tristram, Konrad R. W., Weigelt, Gerd, Wolf, Sebastian   +11 more
core   +1 more source