Physical Review Letters
Physical Review Letters
5 years ago

Stringent Constraints on Fundamental Constant Evolution Using Conjugate 18 cm Satellite OH Lines

Stringent Constraints on Fundamental Constant Evolution Using Conjugate 18 cm Satellite OH Lines
Jayaram N. Chengalur, Tapasi Ghosh, Nissim Kanekar
We have used the Arecibo Telescope to carry out one of the deepest-ever integrations in radio astronomy, targeting the redshifted conjugate satellite OH 18 cm lines at $z≈0.247$ towards PKS $1413+135$. The satellite OH 1720 and 1612 MHz lines are, respectively, in emission and absorption, with exact...

Publisher URL: http://link.aps.org/doi/10.1103/PhysRevLett.120.061302

DOI: 10.1103/PhysRevLett.120.061302

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