7 Result(s)
within
Ravi Subrahmanyan
Physics
Astrophysics and Astroparticles
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Article
Detecting global signal from cosmic dawn and epoch of reionization with SKA
A key science project for SKA-Low is the interferometer imaging of spatio-temporal fluctuations in the hydrogen ionization fraction and spin temperature as a diagnostic of cosmic dawn (CD) and epoch of reioniz...
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Article
18 GHz SZ Measurements of the Bullet Cluster
We present 18 GHz observations of the Bullet cluster using the Austalia Telescope Compact Array (ATCA), which show structure in the Sunyaev–Zeldovich effect; in particular, a deep, compact feature which does n...
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Article
A measurement of the cosmic microwave background temperature 1280 MHz
The absolute temperature of the cosmic microwave background (CMB) has been measured at a frequency of 1280 MHz. The observation was made with a modified version of the L-band receiver used in the Giant Metre w...
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Article
Microwave background radiation related evidence in favour of the standard model
The discovery of the 3K microwave background radiation (MBR) and its interpretation as a relict of the hot big bang was probably the most important observation that led to the elevation of the hot big bang model ...
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Article
An observational constraint on the existence of proto-superclsuters atz=3.3
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Article
An observational constraint on the existence of proto-superclusters at z =3.3
Observations have been conducted using the Ooty Radio Telescope in order to place constraints on the evolutionary scenario leading to the formation of the present day superclusters. The experiment attempted to...
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Article
A search for protocliisters atz = 3.3
We have used the Very Large Array to image a single field in a set of adjacent frequency bands around 333.0 MHz in an attempt to detect 21 cm emission from large scale H I inhomogeneities at a redshift of z = ...
