Apr 7, 2016
We are not living in a fixed rest frame on Earth: the Earth is orbiting around the Sun, the Sun is moving around the centre of our galaxy, and the galaxy itself is moving towards the nearest mass over-density around us, which is the nearest galaxy cluster in Virgo....
Mar 17, 2016
Millisecond pulsars are precise clocks provided by nature. By measuring pulse arrival times of many such pulsars distributed over the sky – a pulsar timing array (PTA) – astronomers are hoping to detect long-period gravitational waves, as produced in super-massive...
Feb 16, 2016
Exploring the neutral hydrogen from the first billion years of the Universe provides a wealth of information about the ionisation state, spatial structure and temperature of the intergalactic medium and the growth of the first stars, galaxies and black holes in the...
Feb 8, 2016
The group of lowest mass stars and brown dwarfs are collectively called ultracool dwarfs. A number of these objects are sources of both burst and quiescent radio emission. The radio bursts are sometimes found to occur periodically on the timescale of the rotation of...
Feb 5, 2016
Imagine you are a galaxy floating through space. You know more or less how luminous you are, how large, how massive. But how do you compare to your peers? Whether galaxies get status anxiety or not, this question is very interesting for astrophysicists, and the...
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