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Two New Cataclysmic Variables in Lyra
Cataclysmic Variables
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2011/10/11
I report on the discovery of two cataclysmic variables in the same field in Lyra originally identified from their magnitudes in USNO-B1.0 catalogue and Palomar images. The historical light curves were...
Reconstruction of the solar spectral UV irradiance for nowcasting of the middle atmosphere state on the basis of LYRA measurements
solar spectral UV middle atmosphere state LYRA
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2008/11/10
The LYRA instrument onboard ESA PROBA2 satellite will provide 6-hourly solar irradiance at the Lyman-alpha (121.6 nm) and the Herzberg continuum (~200–220 nm wavelength range). Because the nowcasting ...
Five Dimensional Stiff Fluid Models in Lyra Geometry
Five dimensional cosmological model stiff fluid Lyra geometry
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2010/4/8
We have constructed stiff fluid cosmological models in five dimensional space-time based on Lyra geometry. Some physical and geometrical properties of the models are discussed.
Cosmological Models of Universe with Variable Deceleration Parameter in Lyra's Manifold
Cosmology FRW universe Lyra geometry
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2010/10/13
FRW models of the universe have been studied in the cosmological theory based on Lyra’s manifold. A new class of exact solutions has been obtained by considering a time dependent displacement field fo...
Electromagnetic Field in Lyra Manifold: A First Order Approach
Electromagnetic Field Lyra Manifold
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2010/10/18
We discuss the coupling of the electromagnetic field with a curved and torsioned Lyra manifold using the Duffin-Kemmer-Petiau theory. We will show how to obtain the equations of motion and energy-mome...