Events Calendar

Astro Seminar: Kavlian Moodley (University of KwaZulu-Natal)

Dark energy and cross-correlations with HIRAX 21cm intensity mapping

Observations of redshifted 21-cm emission of neutral hydrogen over a wide range of radio frequencies allow us to access redshifts that encompass a vast comoving volume, including the era of dark energy. In this talk I will present the Hydrogen Intensity Mapping and Real time Analysis experiment (HIRAX) project, which is a proposed 21cm intensity mapping experiment operating at 400-800 MHz that will measure the evolution of dark energy over the redshift range z=0.8-2.5 by using the characteristic baryonic acoustic oscillation scale as a standard ruler. The HIRAX radio telescope array will be sited in the radio-quiet Karoo astronomy reserve in South Africa and will ultimately comprise 1024 dishes, each six metres in diameter, placed in a compact configuration. I will discuss the design and project status of HIRAX and its scientific prospects. This includes dark energy forecasts as well as prospects for interesting cosmological constraints from cross-correlations of HIRAX data with other large-area cosmological surveys in the southern sky.

Dial-In Information

 

Zoom ID: 970 3971 4442

https://cmu.zoom.us/j/97039714442?pwd=MkNkdWRXR1BOcHFUWkpxTm5oL25DUT09

Department members, see email for access.
Non-department members, contact paugrad@pitt.edu foraccess or to be added to the weekly newsletter.   

Friday, April 23 at 10:00 a.m.

Virtual Event

Astro Seminar: Kavlian Moodley (University of KwaZulu-Natal)

Dark energy and cross-correlations with HIRAX 21cm intensity mapping

Observations of redshifted 21-cm emission of neutral hydrogen over a wide range of radio frequencies allow us to access redshifts that encompass a vast comoving volume, including the era of dark energy. In this talk I will present the Hydrogen Intensity Mapping and Real time Analysis experiment (HIRAX) project, which is a proposed 21cm intensity mapping experiment operating at 400-800 MHz that will measure the evolution of dark energy over the redshift range z=0.8-2.5 by using the characteristic baryonic acoustic oscillation scale as a standard ruler. The HIRAX radio telescope array will be sited in the radio-quiet Karoo astronomy reserve in South Africa and will ultimately comprise 1024 dishes, each six metres in diameter, placed in a compact configuration. I will discuss the design and project status of HIRAX and its scientific prospects. This includes dark energy forecasts as well as prospects for interesting cosmological constraints from cross-correlations of HIRAX data with other large-area cosmological surveys in the southern sky.

Dial-In Information

 

Zoom ID: 970 3971 4442

https://cmu.zoom.us/j/97039714442?pwd=MkNkdWRXR1BOcHFUWkpxTm5oL25DUT09

Department members, see email for access.
Non-department members, contact paugrad@pitt.edu foraccess or to be added to the weekly newsletter.   

Friday, April 23 at 10:00 a.m.

Virtual Event

Topic

Research