Time domain: the next revolution in astrophysics and cosmology


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2017
End date: 31/12/2020
Funding: 3000000 SEK


Description







A revolution in cosmic transient science is taking
place right now: we are ready to start discovering cosmic events with
characteristic time scales of hours or even minutes, dramatically
expanding the range of astrophysical phenomena that can be studied
systematically.
This can be achieved within the scope of the Zwicky
Transient Facility (ZTF), a synoptic optical survey for high-cadence
time-domain astronomy to see first light in 2017. We will scan the sky
nearly fifteen times faster than at present, and have the ability to
identify rare, fast-varying sources. The data-set will allow us to probe
completely uncharted territory, e.g., new kinds of transients with time scales below one day.
The
proposed program involves novel studies of a treasury of phenomena with
important implications for our understanding of astrophysics, cosmology
and fundamental physics: supernovae, exotic transients and gravitationally lensed sources. Mergers of compact objects, i.e. the sources of gravitational waves that LIGO has just started to detect, may be also be detected as electromagnetic signals.
Furthermore, ZTF could have a decisive impact in the study of dark energy: Type Ia SNe will be found within hours from explosion.
This will facilitate some of the most ambitious and detailed studies of
the leading astrophysical systematic uncertainties limiting precision
cosmology today.

The Oskar Klein Centre is a member of the ZTF collaboration thanks to a grant from the Wallenberg Foundation.






Last updated on 2017-04-10 at 12:43