Qualifications & Memberships
My research interests are in high-energy astrophysics and cosmology. I am particularly interested in finding non-gravitational evidence for dark matter. This has led me to investigate the astrophysics of the Galactic Center. It is there that the non-gravitational signatures of dark matter are likely to be largest but unfortunately, there are also a lot of astrophysical processes taking place in that location. These processes have to be accurately accounted for before one can determine if there is any residual dark matter self-annihilation signal.
- Macias O., Horiuchi S., Kaplinghat M., Gordon C., Crocker RM. and Nataf DM. (2019) Strong evidence that the galactic bulge is shining in gamma rays. Journal of Cosmology and Astroparticle Physics 2019(9) http://dx.doi.org/10.1088/1475-7516/2019/09/042.
- Macias O., Gordon C., Crocker R., Coleman B., Paterson D., Horiuchi S. and Pohl M. (2018) Galactic bulge preferred over dark matter for the Galactic centre gamma-ray excess. Nature Astronomy http://dx.doi.org/10.1038/s41550-018-0414-3.
- Ploeg H., Gordon C., Crocker R. and Macias O. (2017) Consistency between the luminosity function of resolved millisecond pulsars and the galactic center excess. Journal of Cosmology and Astroparticle Physics 2017(08) 015: 36. http://dx.doi.org/10.1088/1475-7516/2017/08/015.
- Lacroix T., Macias O., Gordon C., Panci P., Bœhm C. and Silk J. (2016) Spatial morphology of the secondary emission in the Galactic Center gamma-ray excess. Physical Review D 93(10) 103004: 11. http://dx.doi.org/10.1103/PhysRevD.93.103004.
- Macias O., Gordon C., Crocker RM. and Profumo S. (2015) Cosmic ray models of the ridge-like excess of gamma rays in the Galactic Centre. Monthly Notices of the Royal Astronomical Society 451(2): 1833-1847. http://dx.doi.org/10.1093/mnras/stv1002.