Hiranya Peiris | |
---|---|
Born | Hiranya Vajramani Peiris April 29, 1974 |
Nationality | British |
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]
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]
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 a 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 skeptical 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 skepticism 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]
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]
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:
The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. The notion of an expanding universe was first scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations. The earliest empirical observation of the notion of an expanding universe is known as Hubble's law, published in work by physicist Edwin Hubble in 1929, which discerned that galaxies are moving away from Earth at a rate that accelerates proportionally with distance. Independent of Friedmann's work, and independent of Hubble's observations, physicist Georges Lemaître proposed that the universe emerged from a "primeval atom" in 1931, introducing the modern notion of the Big Bang.
The cosmic microwave background, or relic radiation, is microwave radiation that fills all space in the observable 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 electromagnetic 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.
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.
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. In February 2022, he signed an open letter from Russian scientists and science journalists condemning Russia's invasion of Ukraine.
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.
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 angular resolution. The mission was highly successful and substantially improved upon observations made by the NASA Wilkinson Microwave Anisotropy Probe (WMAP).
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.
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 microwave 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.
The CMB Cold Spot or WMAP Cold Spot is a region of the sky seen in microwaves that has been found to be unusually large and cold relative to the expected properties of the cosmic microwave background radiation (CMBR). The "Cold Spot" is approximately 70 μK (0.00007 K) colder than the average CMB temperature, whereas the root mean square of typical temperature variations is only 18 μK. At some points, the "cold spot" is 140 μK colder than the average CMB temperature.
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.
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.
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, theoretical astrophysicist, professor of astronomy, and senior associate dean for math and science at the College of Arts and Sciences at Cornell University.
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.
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).
Erminia Calabrese, FLSW, is a Professor of Astronomy and the Director of Research at Cardiff University School of Physics and Astronomy. She works in observational cosmology using the cosmic microwave background radiation to understand the origins and evolution of the universe. In 2024 she became a Fellow of the Learned Society of Wales, and in 2022 she was awarded the Institute of Physics Fred Hoyle medal and the Learned Society of Wales Dillwyn medal.
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."
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.