Hiranya Peiris

Last updated

Hiranya Peiris
Dr. Hiranya Peiris standing outside the AlbaNova building in Stockholm Sweden (cropped).jpg
Peiris in 2016
Born
Hiranya Vajramani Peiris

1974 (age 4950)
NationalityBritish
Alma mater University of Cambridge (BA)
Princeton University (PhD)
Awards
Scientific career
Fields Physics
Institutions University College London
Stockholm University
University of Chicago
University of Cambridge
Thesis First year Wilkinson microwave anisotropy probe results : cosmological parameters and implications for inflation  (2003)
Doctoral advisor David Spergel [1]
Website https://www.ast.cam.ac.uk/people/Hiranya.Peiris

Hiranya Vajramani Peiris is a British astrophysicist at the University of Cambridge, where she holds the Professorship of Astrophysics (1909). [2] She is best known for her work on the cosmic microwave background radiation, and interdisciplinary links between cosmology and high-energy physics. [3] She was one of 27 scientists who received the Breakthrough Prize in Fundamental Physics in 2018 for their "detailed maps of the early universe." [4]

Contents

Education and early life

Peiris was born in Sri Lanka. [5] She completed the Natural Sciences Tripos at University of Cambridge in 1998, [6] as an undergraduate student of New Hall, Cambridge. [7] [8] She earned a PhD at Princeton University from the department of astrophysical Sciences with advisor David Spergel, where she first worked on the Wilkinson Microwave Anisotropy Probe (WMAP). [1] [9] [10]

Career and research

After her PhD, she went on to work at the Kavli Institute for Cosmological Physics at the University of Chicago as a Hubble fellow. [9] Having held several competitive postdoctoral fellowships, [11] in 2007 Peiris returned to the University of Cambridge as an Science and Technology Facilities Council (STFC) advanced fellow and was awarded a junior research fellowship at King's College, Cambridge in 2008. In 2009, Peiris won a Leverhulme Trust award for cosmology and secured a faculty position at University College London. [12]

She is currently Professor of Astrophysics (1909) at the Institute of Astronomy, Cambridge. [13] She was previously the Director of the Oskar Klein Centre for Cosmoparticle Physics at Stockholm University, [14] and a Professor of Astrophysics at University College London. [15]

In 2012, the WMAP team (including Peiris) won the Gruber Cosmology Prize for their "exquisite measurements of anisotropies in the relic radiation from the Big Bang—the Cosmic Microwave Background". [16] WMAP's results on cosmic inflation, which Peiris contributed to, were described by Stephen Hawking as "the most exciting development in physics during his career". [17]

She was sceptical about the 2014 announcement of the discovery of primordial gravitational waves in the cosmic microwave background: "If they announce gravitational waves on Monday then I will need a great deal of convincing. But if they do have a robust detection ... Jesus wow! I'll be taking next week off." [18] Her scepticism proved well-founded: on 30 January 2015, a joint analysis of BICEP2 and Planck data was published and the European Space Agency announced that the signal can be entirely attributed to dust in the Milky Way, [19] though (non-primordial) gravitational waves have since been detected by different experiments.

In 2018, Peiris was awarded the Hoyle Medal and Prize of the UK Institute of Physics for “her leading contributions to understanding the origin and evolution of cosmic structure." [20]

In 2020 Peiris was awarded the Göran Gustafsson Prize in physics by the Göran Gustafsson Foundation and the Royal Swedish Academy of Sciences "for her innovative research on the dynamics of the early universe, which links cosmological observations to basic physics”. [21] She was also elected as a member of STFC Council, the senior strategic advisory body of the research council that funds particle physics and astronomy in the United Kingdom. [3]

In 2021, Peiris was awarded the Max Born Medal and Prize by the German Physical Society and the Eddington Medal of the Royal Astronomical Society in recognition of her contributions to cosmology. [22] [23]

Peiris was elected as a Foreign Member in the Physics Class of the Royal Swedish Academy of Sciences (KVA) in May 2022. [24] In 2023, Peiris was appointed Professor of Astrophysics (1909) at the Institute of Astronomy, Cambridge. [13]

Public engagement

Alongside academic talks, Peiris gives public lectures about cosmology. [25] [26] She has written articles and given interviews for both radio and print media. [27] She has appeared on podcasts, television programs and the national news. [28] In 2013 she gave a talk at TEDxCERN, "Multiplying Dimensions." [29] That year she was selected as one of Astronomy's top ten rising stars by Astronomy Magazine. [30]

In 2014, the pseudonymously-written Ephraim Hardcastle diary column in the Daily Mail claimed that Peiris (along with Maggie Aderin-Pocock) had been selected to discuss results from the Background Imaging of Cosmic Extragalactic Polarization 2 (BICEP-2) experiment on BBC Newsnight because of her gender and ethnicity. These comments were condemned by mainstream media, the Royal Astronomical Society and Peiris' employer, University College London, [31] [32] and the Daily Mail and its column backed down within days. [31] [32] Peiris offered a rebuttal, "Groundbreaking science is blind to prejudice" in Times Higher Education . [33]

In 2017, Peiris collaborated with artist Penelope Rose Cowley to create artwork entitled "Cosmoparticle". [34] In 2018 Peiris contributed to an artwork by artist Goshka Macuga, which was exhibited at a 2019 exhibition held at the Bildmuseet, Sweden, featuring works by 14 international artists inspired by particle physics. [35] [36]

Awards and honours

Peiris was a member of the 27-person team awarded the 2018 Breakthrough Prize in Fundamental Physics. [37] The US$3 million award was given for the detailed maps of the early universe generated from WMAP. [38] WMAP is a NASA explorer mission that was launched in 2001, which has transformed modern cosmology. [39] Other prizes include:

Peiris receiving the Fowler Prize in 2012 from Roger Davies Hiranya Peiris and Roger Davies, NAM 2012.jpg
Peiris receiving the Fowler Prize in 2012 from Roger Davies

Related Research Articles

<span class="mw-page-title-main">Big Bang</span> How the universe expanded from a hot, dense state

The Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature. It was first proposed in 1927 by Roman Catholic priest and physicist Georges Lemaître. Various cosmological models of the Big Bang explain the evolution of the observable universe from the earliest known periods through its subsequent large-scale form. These models offer a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure. The overall uniformity of the Universe, known as the flatness problem, is explained through cosmic inflation: a sudden and very rapid expansion of space during the earliest moments. However, physics currently lacks a widely accepted theory of quantum gravity that can successfully model the earliest conditions of the Big Bang.

<span class="mw-page-title-main">Cosmic microwave background</span> Trace radiation from the early universe

The cosmic microwave background is microwave radiation that fills all space in the observable universe. It is a remnant that provides an important source of data on the primordial universe. With a standard optical telescope, the background space between stars and galaxies is almost completely dark. However, a sufficiently sensitive radio telescope detects a faint background glow that is almost uniform and is not associated with any star, galaxy, or other object. This glow is strongest in the microwave region of the radio spectrum. The accidental discovery of the CMB in 1965 by American radio astronomers Arno Penzias and Robert Wilson was the culmination of work initiated in the 1940s.

<span class="mw-page-title-main">Rainer Weiss</span> American physicist

Rainer "Rai" Weiss is a German-born American physicist, known for his contributions in gravitational physics and astrophysics. He is a professor of physics emeritus at MIT and an adjunct professor at LSU. He is best known for inventing the laser interferometric technique which is the basic operation of LIGO. He was Chair of the COBE Science Working Group.

<span class="mw-page-title-main">Rashid Sunyaev</span> Russian astronomer (born 1943)

Rashid Alievich Sunyaev is a German, Soviet, and Russian astrophysicist of Tatar descent. He got his MS degree from the Moscow Institute of Physics and Technology (MIPT) in 1966. He became a professor at MIPT in 1974. Sunyaev was the head of the High Energy Astrophysics Department of the Russian Academy of Sciences, and has been chief scientist of the Academy's Space Research Institute since 1992. He has also been a director of the Max Planck Institute for Astrophysics in Garching, Germany since 1996, and Maureen and John Hendricks Distinguished Visiting Professor in the School of Natural Sciences at the Institute for Advanced Study in Princeton since 2010.

Primordial fluctuations are density variations in the early universe which are considered the seeds of all structure in the universe. Currently, the most widely accepted explanation for their origin is in the context of cosmic inflation. According to the inflationary paradigm, the exponential growth of the scale factor during inflation caused quantum fluctuations of the inflaton field to be stretched to macroscopic scales, and, upon leaving the horizon, to "freeze in". At the later stages of radiation- and matter-domination, these fluctuations re-entered the horizon, and thus set the initial conditions for structure formation.

<i>Planck</i> (spacecraft) European cosmic microwave background observatory; medium-class mission in the ESA Science Programme

Planck was a space observatory operated by the European Space Agency (ESA) from 2009 to 2013. It was an ambitious project that aimed to map the anisotropies of the cosmic microwave background (CMB) at microwave and infrared frequencies, with high sensitivity and small angular resolution. The mission was highly successful and substantially improved upon observations made by the NASA Wilkinson Microwave Anisotropy Probe (WMAP).

<span class="mw-page-title-main">Charles L. Bennett</span> American astronomer

Charles L. Bennett is an American observational astrophysicist. He is a Bloomberg Distinguished Professor, the Alumni Centennial Professor of Physics and Astronomy and a Gilman Scholar at Johns Hopkins University. He is the Principal Investigator of NASA's highly successful Wilkinson Microwave Anisotropy Probe (WMAP).

Edward L. (Ned) Wright is an American astrophysicist and cosmologist. He has worked on space missions including the Cosmic Background Explorer (COBE), Wide-field Infrared Survey Explorer (WISE), and Wilkinson Microwave Anisotropy Probe (WMAP) projects.

Richard Massey is a physicist currently working as Royal Society Research Fellow in the Institute for Computational Cosmology at Durham University. Previously he was a senior research fellow in astrophysics at the California Institute of Technology and STFC Advanced Fellow at the Institute for Astronomy of the University of Edinburgh. Massey graduated in Maths and Physics from the University of Durham in 2000 and was a member of Castle. He completed his Ph.D. at Cambridge in 2003, with a thesis entitled Weighing the Universe with weak gravitational lensing.

<span class="mw-page-title-main">Lyman Page</span> American astrophysicist

Lyman Alexander Page, Jr. is the James S. McDonnell Distinguished University Professor of Physics at Princeton University. He is an expert in observational cosmology and one of the original co-investigators for the Wilkinson Microwave Anisotropy Probe (WMAP) project that made precise observations of the electromagnetic radiation from the Big Bang, known as cosmic background radiation.

The Gruber Prize in Cosmology, established in 2000, is one of three prestigious international awards worth US$500,000 awarded by the Gruber Foundation, a non-profit organization based at Yale University in New Haven, Connecticut.

<span class="mw-page-title-main">Uroš Seljak</span> Slovenian cosmologist

Uroš Seljak is a Slovenian cosmologist and a professor of astronomy and physics at University of California, Berkeley. He is particularly well-known for his research in cosmology and approximate Bayesian statistical methods.

Marc Kamionkowski is an American theoretical physicist and currently the William R. Kenan, Jr. Professor of Physics and Astronomy at Johns Hopkins University. His research interests include particle physics, dark matter, inflation, the cosmic microwave background and gravitational waves.

<span class="mw-page-title-main">Licia Verde</span> Italian cosmologist and theoretical physicist (born 1971)

Licia Verde is an Italian cosmologist and theoretical physicist and currently ICREA Professor of Physics and Astronomy at the University of Barcelona. Her research interests include large-scale structure, dark matter, dark energy, inflation and the cosmic microwave background.

The "axis of evil" is a name given to the apparent correlation between the plane of the Solar System and aspects of the cosmic microwave background (CMB). It gives the plane of the Solar System and hence the location of Earth a greater significance than might be expected by chance – a result which has been claimed to be evidence of a departure from the Copernican principle as assumed in the concordance model.

<span class="mw-page-title-main">Brian Keating</span> American cosmologist

Brian Gregory Keating is an American cosmologist. He works on observations of the cosmic microwave background, leading the BICEP, POLARBEAR2 and Simons Array experiments. He received his PhD in 2000, and is a distinguished professor of physics at University of California, San Diego, since 2019. He is the author of two books, Losing The Nobel Prize and Into the Impossible.

Michele Limon is an Italian research scientist at the University of Pennsylvania. Limon studied physics at the Università degli Studi di Milano in Milan, Italy and completed his post-doctoral work at the University of California, Berkeley. He has been conducting research for more than 30 years and has experience in the design of ground, balloon and space-based instrumentation. His academic specialties include Astrophysics, Cosmology, Instrumentation Development, and Cryogenics.

Rachel Bean is a cosmologist and theoretical astrophysicist. She is a professor of astronomy and the interim dean of the Cornell University College of Arts and Sciences.

The Fred Hoyle Medal and Prize was established in 2008 by the Institute of Physics of London for distinguished contributions to astrophysics, gravitational physics or cosmology. The medal is named after astronomer Fred Hoyle who formulated the theory of stellar nucleosynthesis. The medal is made of silver and accompanied by a prize and a certificate. The medal was awarded biennially from 2008 to 2016. It has been awarded annually since 2017.

<span class="mw-page-title-main">Jo Dunkley</span> British astrophysicist

Joanna Dunkley is a British astrophysicist and Professor of Physics at Princeton University. She works on the origin of the Universe and the Cosmic microwave background (CMB) using the Atacama Cosmology Telescope, the Simons Observatory and the Large Synoptic Survey Telescope (LSST).

References

  1. 1 2 Peiris, Hiranya (2003). First year Wilkinson Microwave Anisotropy Probe results: Cosmological parameters and implications for inflation (Thesis). Bibcode:2003PhDT.........9P. OCLC   53202248. ProQuest   288167013.
  2. Hiranya Peiris publications indexed by Google Scholar OOjs UI icon edit-ltr-progressive.svg
  3. 1 2 "STFC Council member - Professor Hiranya Peiris". ukri.org. STFC Council. Retrieved 18 March 2020.
  4. Oral history interview transcript with Hiranya Peiris on 21 April 2021, American Institute of Physics, Niels Bohr Library & Archives
  5. Goodyear, Charis. "The cosmologist solving questions at the boundary of our understanding". cam.ac.uk. This Cambridge Life. Retrieved 12 December 2023.
  6. Thompson, Michael T J (2005). Advances In Astronomy: From The Big Bang To The Solar System. World Scientific. p. 122. ISBN   1-78326-019-X.
  7. "Career Path: Exploring fingerprints from the Big Bang". Murray Edwards College – University of Cambridge. 19 November 2015. Retrieved 15 February 2019.
  8. UCL (26 January 2018). "Hiranya Peiris". Cosmoparticle Initiative. Retrieved 15 February 2019.
  9. 1 2 "Iris View Profile". iris.ucl.ac.uk. Retrieved 12 December 2017.[ self-published source? ]
  10. Thompson J Michael T (26 October 2005). Advances In Astronomy: From The Big Bang To The Solar System. World Scientific. pp. 99–. ISBN   978-1-78326-019-5.
  11. "Dr Hiranya Peiris". Astronomy & Geophysics. 53 (1): 1.37. February 2012. doi: 10.1111/j.1468-4004.2012.53136_7.x .
  12. "The Leverhulme Trust, 2009 Award Winners" (PDF). Archived from the original (PDF) on 26 April 2016. Retrieved 12 December 2017.
  13. 1 2 "Hiranya Peiris appointed Professor of Astrophysics (1909)". www.ast.cam.ac.uk. Retrieved 20 October 2023.
  14. "Prof Hiranya Peiris - Oskar Klein Centre". ucl.ac.uk. Retrieved 12 December 2023.
  15. "Prof Hiranya Peiris". ucl.ac.uk. Retrieved 25 January 2018.
  16. 1 2 "2012 Gruber Cosmology Prize Citation | The Gruber Foundation". gruber.yale.edu. Retrieved 12 December 2017.
  17. "2013 Smart Guide: New maps to rein in cosmic inflation". New Scientist. Retrieved 12 December 2017.
  18. "Gravitational waves: have US scientists heard echoes of the big bang?". the Guardian. 14 March 2014. Retrieved 24 August 2022.
  19. Cowen, Ron (30 January 2015). "Gravitational waves discovery now officially dead". Nature . doi:10.1038/nature.2015.16830. S2CID   124938210.
  20. 1 2 Physics, Institute of. "2018 Fred Hoyle Medal and Prize". iop.org. Retrieved 19 February 2021.
  21. 1 2 Physics Department, Stockholm University. "Göran Gustafsson Prize". fysik.su.se. Retrieved 18 March 2020.
  22. 1 2 "2021". DPG. Retrieved 21 November 2020.
  23. 1 2 "Eddington Medal 2021 – Professor Hiranya Peiris" (PDF). Royal Astronomical Society. Retrieved 11 January 2021.
  24. 1 2 "Kungl. Vetenskapsakademien". kva.se. Retrieved 20 June 2022.
  25. The Royal Institution (10 August 2016), Cosmology: Galileo to Gravitational Waves – with Hiranya Peiris , retrieved 12 December 2017
  26. "Hiranya Peiris | In the Dark". telescoper.wordpress.com. Retrieved 12 December 2017.
  27. "Multiverse Proof Possibility From Colliding Universes | Quanta Magazine". Quanta Magazine. Retrieved 12 December 2017.
  28. Devlin, Hannah; Jackson, Graihagh (24 May 2019). "Cross Section: Hiranya Peiris – Science Weekly podcast". The Guardian. Retrieved 19 February 2021.
  29. "TEDxCERN | TED". ted.com. Retrieved 12 December 2017.
  30. "Astronomy Magazine names "Rising Stars of Astronomy"". earlyuniverse.org. Retrieved 12 December 2017.
  31. 1 2 "Scientist (PhD in astrophysics) shocked by reference to her ethnicity". The Independent. 21 March 2014. Retrieved 12 December 2017. A Mail spokesman said the paper fully accepted that the women were highly qualified in their field and that that was the reason they were chosen for interview. Yesterday's Ephraim Hardcastle column stated: "I accept without questions that both ladies are highly qualified."
  32. 1 2 Meikle, James (21 March 2014). "Daily Mail accused of insulting top female scientists". The Guardian. A Mail spokesman made it clear that the paper fully accepts that the women were highly qualified in their field and that was the reason they were chosen for interview. The Mail is in contact with Professor Price.
  33. "Groundbreaking science is blind to prejudice". Times Higher Education (THE). 27 March 2014. Retrieved 12 December 2017.
  34. "COSMOPARTICLE". Art by Penelope Rose Cowley. Retrieved 12 December 2017.
  35. "Imaginative intersection". physicsworld.com/. 18 June 2020. Retrieved 19 February 2021.
  36. "Entangled Realities: Minding the Gap by Ariane Koek". clotmag.com. Retrieved 19 February 2021.
  37. "Breakthrough Prize – Fundamental Physics Laureates – Norman Jarosik and the WMAP Science Team". breakthroughprize.org. Retrieved 12 December 2017.
  38. "RAS Vice-President Professor Hiranya Peiris shares Breakthrough Prize in Fundamental Physics". ras.ac.uk. Retrieved 19 February 2021.
  39. "Wilkinson Microwave Anisotropy Probe (WMAP)". map.gsfc.nasa.gov. Retrieved 12 December 2017.
  40. Larsson, Per. "Stockholm University receives four ERC Advanced Grants – Stockholm University". su.se. Retrieved 4 May 2022.
  41. "Cosmoparticle Physicists awarded share in Buchalter Cosmology Prize". ucl.ac.uk. 29 January 2019. Retrieved 17 January 2022.
  42. "Awards Won – Astrophysics Science Division – 660". science.gsfc.nasa.gov. Retrieved 12 December 2017.
  43. "Fundamental Physics Breakthrough Prize". breakthroughprize.org. Retrieved 19 February 2021.
  44. "Buchalter Cosmology Prize for Bubble Collision Simulations". earlyuniverse.org. Retrieved 12 December 2017.
  45. Massey, Robert. "RAS honours leading astronomers and geophysicists". ras.org.uk. Retrieved 12 December 2017.
  46. "Young researchers win Philip Leverhulme Prizes". Astronomy & Geophysics. 50 (6): 6.08. December 2009. Bibcode:2009A&G....50f...8.. doi: 10.1111/j.1468-4004.2009.50604_16.x .
  47. "Dr Hiranya Peiris – Research Councils UK". webarchive.nationalarchives.gov.uk. Archived from the original on 14 July 2017. Retrieved 19 February 2021.
  48. "Kavli Frontiers of Science Alumni". National Academy of Sciences.