Blandford, Roger – In the footsteps of Newton

Roger David Blandford, FRS, FRAS (1949 –     )

Roger David Blandford, FRS, FRAS is a British theoretical astrophysicist, best known for his work on black holes.

He was born in Grantham on 28 August 1949, and always joked with his sons, that he a born just a few miles from Sir Isaac Newton , although he grew up in Birmingham. He is now based at Stanford University in the USA

And when his sons Eric & Edward asked Dad what he had to do to get a doctorate, he said “just a few sums”.

He went to Magdalene College, Cambridge and St John’s College, Cambridge  Institute for Advanced Study

He is a Fellow of the Royal Society, Member of the U.S. National Academy of Science, Fellow of the Royal Astronomical Society and Fellow of the American Academy of Arts and Sciences.[3] He is currently Luke Blossom Professor in the School of Humanities and Sciences at Stanford University, Professor of Physics at Stanford University and at Stanford Linear Accelerator Center (SLAC) National Accelerator Laboratory.

He was the Pehong and Adele Chen Director, Kavli Institute for Particle Astrophysics and Cosmology from 2003 to 2013.

Blandford is famous in the astrophysical community for the Blandford-Znajek process which is a model for the extraction of energy from a black hole.

In April 2005 he wrote a letter to the astronomy community showing his concern about the George W. Bush administration US space science policy.

He is also the chair of Astro2010, the decadal survey that helps define and recommend funding priorities for U.S. astronomy research in the upcoming decade.

Blandford is considered to be one of the most outstanding all-around theoretical astrophysicists of his generation.

He has made major contributions to an extremely broad spectrum of astrophysical problems, arguably placing him among the rare group of “universal” scientists. He has been one of the leaders in the modelling and interpretation of gravitational lensing.

He has contributed to the interpretation of gamma-ray data from the Fermi spacecraft and to the study of gravitational waves. His most important research contributions deal with the fundamental understanding of active galactic nuclei (AGN) and their relativistic jets.

He is the author or co-author of classic papers that identified the key processes involved in AGN, driven by accreting massive black holes. These same processes are also relevant to gamma-ray bursts and stellar-mass black holes. He and his collaborators originated key ideas leading to the spectacular multi-scale acceleration and collimation of relativistic jets, involving complex fluid-dynamical and electro-dynamical processes.

One of his most prescient contributions was the recognition that magnetic torques could extract energy from a spinning (Kerr) black hole, and thus efficiently drive jets. This paper as well as others on the creation of fast winds from accretion disks around massive black holes have in recent years become even more relevant and widely cited than when they were originally written.

This is because high resolution radio and infrared interferometric observations are just now beginning to directly probe and reveal the innermost accretion and jet formation zones around massive black holes, which Blandford analyzed in his prescient theoretical work. The disk winds are also relevant for outflows from protostars.

Another work that is gaining increasing attention deals with the fate of binary black holes, which arise as the outcome of mergers between galaxies. He is also the co-inventor of the “reverberation technique,” which uses the temporal changes of line and continuum emission to explore the spatial structure of gas in the vicinity of distant super-massive black holes, a now-standard technique used by many observers.

Blandford’s contributions to this subject began with analytic work, but in recent papers he and his collaborators have exploited increasingly sophisticated numerical techniques to capture realistically the complex physics in the strong gravity environment of spinning and accreting black holes.

In addition to his research, Roger Blandford stands out because of his tireless participation in community service, culminating in the leadership of the 2010 US Decadal Survey in Astronomy and Astrophysics.

Blandford’s many profound contributions to theoretical astrophysics and his continuing originality and towering presence make him a worthy recipient of the 2020 Shaw Prize in Astronomy worth $1.2 million.

The Shaw Prize in Astronomy 2020 is awarded to AAS member Roger D. Blandford, Luke Blossom Professor in the School of Humanities and Sciences and Professor at SLAC National Accelerator Laboratory, Stanford University, for his foundational contributions to theoretical astrophysics, especially concerning the fundamental understanding of active galactic nuclei, the formation and collimation of relativistic jets, the energy extraction mechanism from black holes, and the acceleration of particles in shocks and their relevant radiation mechanisms.

Other awards include the Helen B. Warner Prize (1982), Dannie Heineman Prize for Astrophysics (1998), Eddington Medal (1999), and the Gold Medal of the Royal Astronomical Society (2013)