Readhead Anthony

Readhead
Ερευνητής στο Ινστιτούτο Αστροφυσικής
Επίτιμο Μέλος
Ομότιμος Καθηγητής στο Τμήμα Αστρονομίας , California Institute of Technology (ΗΠΑ)

E-mail : acr@astro.caltech.edu
Τηλέφωνο : +1 626 395-4972
Εκπαίδευση :

Ο Anthony C. Readhead απέκτησε το πτυχίο του στη Φυσική από το Πανεπιστήμιο του Witwatersrand (Νότια Αφρική) το 1968 και το διδακτορικό του στη Φυσική από το Πανεπιστήμιο του Cambridge το 1972. Η διατριβή του είχε τίτλο «The angular structure of radio sources» και πραγματοποιήθηκε υπό την επίβλεψη του καθηγητή Antony Hewish.

Σταδιοδρομία :

Ξεκίνησε την ακαδημαϊκή του καριέρα στο California Institute of Technology (ΗΠΑ) ως μεταδιδακτορικός υπότροφος (1974-75) και συνέχισε ως Senior Research Fellow (1976-79) και  Research Associate, 1979-81. Εκλέχθηκε καθηγητής ραδιοαστρονομίας το 1981 και καθηγητής αστρονομίας από το 1990 έως το 2000. Είχε την έδρα Rawn Professor, 2000-13 και στη συνέχεια Robinson Professor, 2013-15. Από το 2015 είναι Robinson Professor, Emeritus. Ο καθηγητής Readhead προσέφερε σε διάφορες διοικητικές θέσεις όπως Director of the Owens Valley Radio Observatory, 1981-86, 2007-18,  Executive Officer for Astronomy, 1990-92, 2012-13; Director of Chajnantor Observatory, 2006-2011. Διετέλεσε Jet Propulsion Laboratory Senior Research Scientist, 2006-15. Εκλέχθηκε ως το πρώτο "Επίτιμο Μέλος" του Ινστιτούτου Αστροφυσικής το 2021.

Ερευνητικά Ενδιαφέροντα :

The main areas of interest of Prof. Readhead are observational cosmology, especially the cosmic microwave background radiation, and active galaxies, with special emphasis on the central engines that drive them and the formation of relativistic jets. In carrying out research in both these areas he is particularly interested in developing state-of-the-art instrumentation.

Over the last ten years he led the Cosmic Background Imager (CBI) project in Chile, and this has now been superseded by the QU Imaging ExperimenT (QUIET) project at the same site. In Phase I, his group demonstrated the feasibility of using Monolithic Millimeterwave Integrated Circuits (MMICs) for making very sensitive observations of the cosmic microwave background, and is  now embarking on QUIET Phase II, with which they hope to detect the large-scale B-mode polarization radiation caused by gravitational waves interacting with the CMB. The detection of this signal would prove that the universe did go through an inflationary phase, reveal the energy scale of inflation, possibly pushing the clock back to 10-35 s after the Big Bang. Our new radio laboratory in Cahill is working closely with JPL and Northrop Grumman Corporation to improve the sensitivity of the MMIC amplifiers.

The other side of his research involves the engines that drive the activity in active galaxies. Hi group, in collaboration with several others, developed the Very Long Baseline Interferometry (VLBI) imaging techniques that are in wide use today, and we are using VLBI to study a carefully selected sample of blazars that are also being observed with Fermi-GST, and in addition we are observing the TeV sources being monitored by VERITAS. Our program of 15 GHz monitoring of the light curves of ~1200 blazars on the Owens Valley Radio Observatory (OVRO) 40m Telescope twice a week is the most comprehensive variability study of active galaxies thus far and is providing key information on these objects.