Daryl Haggard



  • CIFAR Azrieli Global Scholar
  • Gravity & the Extreme Universe


  • McGill University
Department Physics and the McGill Space Institute


  • Canada


PhD (Astronomy), University of Washington
MSc (Astronomy), University of Washington
MSc (Physics), San Francisco State University
BA (Philosophy), St. John’s College Santa Fe


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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