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Daryl Haggard


  • CIFAR Azrieli Global Scholar 2017-2019
  • Gravity & the Extreme Universe


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Daryl Haggard’s research focuses on Sagittarius A*, the supermassive black hole at the heart of our Milky Way galaxy.

Haggard’s team uses radio, submillimetre, near infrared and X-ray telescopes to probe the black hole’s exotic environment, where strong gravity plays a key role. Her team studies the interplay between distant growing supermassive black holes, or active galactic nuclei, and their host galaxies. They have also searched for X-ray flashes emitted from neutron stars and black holes when they collide.


  • Kavli Frontiers Fellow, National Academy of Sciences, 2014–16
  • CIERA Postdoctoral Fellow, Northwestern University, 2010–14
  • NASA Jenkins Predoctoral Fellow, University of Washington, 2005–08
  • Achievement Awards for College Scientists, San Francisco State University, 2001–03
  • NSF GK-12 Fellow, San Francisco State University, 2001–02

Relevant Publications

  • Haggard, D. et al. "A Deep Chandra X-ray Study of Neutron Star Coalescence GW170817." ApJL 848 (2017).
  • Abbott, B.P. et al. "Multi-messenger Observations of a Binary Neutron Star Merger." ApJL 848 (2017).
  • Capellupo, D. et al. "Simultaneous Monitoring of X-ray and Radio Variability in Sagittarius A*." Astrophysical Journal 845 (2017).
  • Ponti, G. et al. "A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission." Monthly Notices of the Royal Astronomical Society 468 (2017): 2447–2468.
  • Haggard, D. et al. "Low Mass X-ray Binaries in the Inner Galaxy: Implications for Millisecond Pulsars and the GeV Excess." Journal of Cosmology and Astroparticle Physics 05 (2017).
  • Corrales, L.R. et al. "X-ray Scattering Echos and Ghost Halos From the Intergalactic Medium: Relation to the Nature of AGN Variability." Astrophysical Journal 839 (2017).
  • Capellupo, D.M., G. Waffelard-Fernandez, and D. Haggard. "A Comparison of Two Methods for Estimating Black Hole Spin in Active Galactic Nuclei." Astrophysical Journal Letters 836 (2017).

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