Resolving the innermost parsec of Centaurus A at mid-infrared wavelengths
نویسندگان
چکیده
منابع مشابه
Measurement of the nonlinear refractive index of air constituents at mid-infrared wavelengths.
We measure the nonlinear refractive index coefficients in N₂, O₂, and Ar from visible through mid-infrared wavelengths (λ=0.4-2.4 μm). The wavelengths investigated correspond to transparency windows in the atmosphere. Good agreement is found with theoretical models of χ((3)). Our results are essential for accurately simulating the propagation of ultrashort mid-infrared pulses in the atmosphere.
متن کاملGeneration of Multiple Mid Infrared Wavelengths Using PPLN and AgGaSe2
We report the demonstration of simultaneously generating two mid infrared wavelengths using both PPLN and AgGaSe2 nonlinear materials pumped by a KTP OPO at 1.54 μm. In either case, the signal and idler waves were near 2.5 μm and 4.0 μm. The architecture we chose is capable of producing three important IRCM wavelength bands near 2.5, 3.5 and 4.0 μm in the mid infrared region, and of providing r...
متن کاملThe Cepheid Period-Luminosity Relation at Mid-Infrared Wavelengths: II. Second-Epoch LMC Data
We present revised and improved mid-infrared Period-Luminosity (PL) relations for Large Magellanic Cloud (LMC) Cepheids based on double-epoch data of 70 Cepheids observed by Spitzer at 3.6, 4.5, 5.8 and 8.0 μm. The observed scatter at all wavelengths is found to decrease from ±0.17 mag to ±0.14 mag, which is fully consistent with the prediction that the total scatter is made up of roughly equal...
متن کاملThe Cepheid Period-Luminosity Relation at Mid-Infrared Wavelengths: I. First-Epoch LMC Data
We present the first mid-infrared Period-Luminosity (PL) relations for Large Magellanic Cloud (LMC) Cepheids. Single-epoch observations of 70 Cepheids were extracted from Spitzer IRAC observations at 3.6, 4.5, 5.8 and 8.0 μm, serendipitously obtained during the SAGE (Surveying the Agents of a Galaxy’s Evolution) imaging survey of the LMC. All four mid-infrared PL relations have nearly identical...
متن کاملAll-semiconductor active plasmonic system in mid-infrared wavelengths.
Metal-based plasmonics has a wide range of important applications but is subject to several drawbacks. In this paper, we propose and investigate an all-semiconductor-based approach to plasmonics in mid-infrared (MIR) wavelength range using InAs heterostructures. Our results show that InAs heterostructures are ideal for plasmonics with the shortest plasmon wavelength among common semiconductors....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2007
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20066967