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Professor Ofer Lahav

Ofer Lahav
Ofer Lahav is Perren Chair of Astronomy in the Ìý²¹³ÙÌý²¹²Ô»å Vice-Dean (International) of the UCL Faculty of Mathematical and Physical Sciences (MAPS). He is also Co-Director of the STFC-funded at 911±¬ÁÏÍø. Ofer's research area is Observational Cosmology, in particular probing Dark Matter and Dark Energy. His work involves Machine Learning for Big Data.Ìý

Ìý(via UCL IRIS)


Notable Events

The DES Book, published in Sept 2020

  • °Õ³ó±ðÌýÌýwas published in September 2020, and twoÌývirtual launch events wereÌýheld onÌýÌý²¹²Ô»å .ÌýÌý

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  • The Ìýwas delivered by Ofer on 9 October 2020. A recording of the lecture is available on the Ìý(slides availableÌý), and you can watch Ofer receiving his lectureship award at the .Ìý

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Group photo taken at Ofer@60, Cumberland Lodge, AprilÌý2019.

Education and Previous Roles

Ofer studied at Tel-Aviv University (BSc, 1980), at Ben-Gurion University (MSc, 1985; supervised by Jacob Bekenstein) and earned his PhD from the University of Cambridge (1988; supervised by George Efstathiou and Donald Lynden-Bell), where he was later a Member of Staff at the Institute of Astronomy (1990-2003) and a Fellow of St Catharine's College.

At 911±¬ÁÏÍø he previously served as Head of Astrophysics (2004-2011), establishing Cosmology as a research area, and as Vice-Dean (for Research) of the Faculty of Mathematical and Physical Sciences (2011-2015).

Research and Publications

Research Topics

  • Cosmological probes of Dark Matter and Dark Energy
  • Large spectroscopic and photometric redshift surveys
  • Neutrino Cosmology
  • Formation and evolution of galaxies
  • Data Science

During 2012-2018 he held a European Research Council (ERC) Advanced Grant onÌý"Testing the Dark Energy Paradigm" (TESTDE).

Ofer has over 400 research articles in refereed journals, seeÌý

Other relevant links:

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Current and Past PhD Students

Over the years, Ofer has supervised over 30 PhD students at Cambridge and UCL.

Current PhD Students

  • Lucy Clerkin
  • Ben Henghes
  • Constantina Nicolaou
  • Sunil Mucesh
  • Prabh Bhambra
  • Joshua Williamson

Past PhD Students

At Cambridge: Caleb Scharf, Avi Naim, Andy Loan, Simon Folkes, Matthew Webster, Manula Magliocchetti, Andrew Firth, Darren Madgwick, Pirin Erdogdu, Adrian Collister, Vivienne WildÌý

At 911±¬ÁÏÍø: Anais Rassat, Alexandra Abate, Chris Lintott, Angeliki Kiakotou , Manda Banerji, Shuan Thomas, Adam Hawken, Fotini Economou, Morgan Hollis, Maayane Soumagnac. Antonella Palmese, Davide Gualdi, Michael McLeod, John Soo, Niall Jeffrey, Krishna Naidoo

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Current and Past Postdocs

Current Postdocs

  • Qianjun (Ellen) Hang
  • Lorne Whiteway

Past Postdocs

At Cambridge: Karl Fisher, Basilio Santiago, Sarah Bridle, Jochen Weller, Oystein Elgaroy, Irit Maor

At 911±¬ÁÏÍø: Igancio Ferreras, Filipe Abdalla, Kazuhide Ichikawa, Eduardo Cypriano. Manda Benerji, Ole Host, Gert Hutsi, Molly Swanson, Chris Sabiu, Sree Balan, Aurelien Benoit-Levy, Stephanie Jouvel, Donnacha Kirk, Michelle Lochner, Marc Manera, Alex Merson, Iftach Sadeh, Will Hartley, Anges Ferte, Satya Gontcho a Gontcho, Fabian Krause, Pablo Lemos

Collaborative international projects
  • Ìý- Survey of 300,000,000 galaxies to study the nature of Dark EnergyÌý
  • Ìý- Hubble Space Telescope imaging survey of galaxy clustersÌý
  • Ìý- The Dark Energy Spectroscopic InstrumentÌý
  • Ìý- The Large Synoptic Survey TelescopeÌý
  • Ìý- Space Mission; ESA's Cosmic Vision
Selected Reviews and Semi Popular Articles
  • ÌýEdited by Lahav, O., Calder, L., Mayers, J. & Frieman, J., World Scientific (2020)
  • ÌýLahav, O. & Liddle, A.R. (2019) - Invited review, in "The Review of Particle Physics" (Particle Data Group)
  • ,Ìý Lahav, O., In the memorialÌývolume "Jacob Bekenstein: The Conservative Revolutionary",Ìý World Scientific (2019)
  • , Lahav, O., Observatory Magazine, 138, 261 (2018)
  • ÌýDES collaboration, MNRAS, 460, 1270Ìý(2016)
  • ÌýLahav, O. & Massimi, M., RAS A&G June 2014 issue
  • Calder, L. & Lahav, O., Physics World, Jan 2010 issue
  • Lahav, O., Odyssey magazine (in Hebrew), Jan 2010 issue, pg. 38
  • ÌýCalder, L. & Lahav,O., RAS A&G, Feb 2008 issue (revised version)
Selected Recent Presentations
  • RAS George Darwin Lecture 2020:Ìý, delivered in October 2020 (slides available ).
  • "Machine Learning in Astronomy", delivered in ‘Nails and Hammers’ at the Weizmann Institute (August 2019) and as a guest lecture at the CDT ML Ìýcourse (March 2020)
  • Conference summary talk Ìý- Cosmic Flows 2020 (in honour of Renee Kraan-Korteweg), Stellenbosch South AfricaÌýÌý(February 2020)
  • , Invited talk given at the Kavli Symposium, Oslo (2016)
  • , Invited talk given at Neutrino 2016, London (2016)
  • , Invited talk in Bekenstein's memorial meeting, the Israeli Academy, Jerusalem (2016)
  • RAS Gerald Whitrow Lecture 2014, , delivered at NAM in Porsmouth (2014)
Software Packages
  • : Photometric redshifts using Machine Learning (Sadeh, Abdalla & Lahav 2016)
  • : Photometric redshifts using Artificial Neural Networks (Collister & Lahav 2004)
  • : Orbital parameters of extra-solar planets from radial velocities using Bayesian MCMC (Balan & Lahav 2008)
Scientific Committees
Ofer is one of the founders of theÌý, and he co-chaired the international DES Science Committee from inception until 2016. He also participates in the next-generation surveys (,Ìý,Ìý). He chairs both the DES:UK and DESI:UK consortia. He served as Vice-President of theÌýÌý(2010-2012), and as aÌýmember of theÌýÌý(2016-2019). Currently is a member of the Scientific Advisory Board of the Astro PartilceÌýPhysics European Consortium (APPEC).
Recent Media Reports and Public Outreach
  • - BBC News at Ten, BBC News at Six, , , UCL Press Release (2021)
  • Spotlight on... Professor Ofer Lahav - 911±¬ÁÏÍøews (2021)
  • Ìý- UKRI websiteÌý(2021)
  • - BBC News at Ten, BBC News at Six, BBC World Service andÌýBBC online (2019)
  • Ìý- TRT TV Round-Table discussion on (video, 26 min) (2019)Ìý
  • Ìý-ÌýPanel Discussion at the Edinburgh International Science Festival (video, 1 hr)Ìý(2018)
  • - Observer article for Dark Matter Day (2018)
  • (2017)
  • - BBC onlineÌý(2017)
  • Ìý- DES websiteÌý(2017)
  • (video, 36 min)Ìý(2016)
  • Ìý(animation video, 3 min)Ìý(2015)
  • Ìý-ÌýGuardian online (video, 3 min)Ìý(2015)
  • (audio, from 84 min)Ìý(2013)
  • Ìý-ÌýLecture at the Royal Institution (audio, 1hr 27 min)Ìý(2013)
  • (video, 7 min)Ìý(2012)
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Last Updated: 26 March 2024

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