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Payez Alexandre

From IFPA wiki

Position in the IFPA group

Former Ph.D. Student; currently Postdoctoral Research Fellow at the Deutsches Elektronen-Synchrotron (DESY), in Hamburg.

 The subject of my thesis work in 10 words: Studying the influence of axion-photon mixing on light polarisation.

Ph.D. thesis: "Large-scale alignments of quasar polarisations: a detailed study of the spinless-particle scenario". Defended on May 3rd 2013.

Advisor: J.R. Cudell.

Main interests in physics

  • Phenomenology of astroparticle physics;
  • Theoretical astrophysics;
  • General relativity and cosmology.


For the full list, see ORBi. See also inSPIRE, arXiv.

Selected papers:

  • Revisiting the SN1987A gamma-ray limit on ultralight axion-like particles, A. Payez (DESY), C. Evoli (Hamburg U.), T. Fischer (Wroclaw U.), M. Giannotti (Barry U.), A. Mirizzi (Hamburg U.), A. Ringwald (DESY), JCAP 1502 (2015) 006;
  • New polarimetric constraints on axion-like particles, A. Payez, J.R. Cudell, D. Hutsemékers (Liège U.), JCAP 1207 (2012) 041;
  • Can axion-like particles explain the alignments of the polarisations of light from quasars?, A. Payez, J.R. Cudell, D. Hutsemékers (Liège U.), Phys. Rev. D84 (2011) 085029.

Talks given

  1. AGO seminar @ Liège U., Apr 28th 2015, Liège, Belgium;
  2. SFB Block Meeting, Mar 26th 2015, Hamburg, Germany;
  3. [Invited Visitor] IBS–MultiDark Joint Focus Program: WIMPs and Axions, Oct 20th 2014, Daejeon, Republic of Korea;
  4. DESY Theory Workshop, Sep 24th 2014, Hamburg, Germany;
  5. [Lecture] Hamburg–Oxford–Paris Workshop on Astroparticle Physics with Multiple Messengers (Ph.D. training programme), Sep 10th 2014, Hamburg, Germany;
  6. [Invited Talk] X-ray polarisation in astrophysics: a window about to open?, Aug 27th 2014, Stockholm, Sweden;
  7. XXVI Workshop Beyond the Standard Model, Mar 10th 2014, Bad Honnef, Germany;
  8. Seminar @ Hamburg U., Oct 28th 2013, Hamburg, Germany;
  9. 9th Patras Workshop on Axions, WIMPs and WISPs, Jun 28th 2013, Mainz, Germany;
  10. Internal IFPA Seminar, Mar 19th 2012, Liège, Belgium;
  11. 7th Patras Workshop on Axions, WIMPs and WISPs, Jun 30th 2011, Mykonos, Greece;
  12. Internal IFPA Seminar, Feb 22nd 2011, Liège, Belgium;
  13. AGO Ph.D. student day, Sep 23rd 2010, Liège, Belgium;
  14. [Invited Seminar @ OMP/LATT], May 12th 2010, Toulouse, France;
  15. PandA doctoral school day, May 7th 2010, Mons, Belgium;
  16. Internal IFPA Seminar, Feb 8th 2010, Liège, Belgium;
  17. [Invited Talk], Axions 2010 (Sikivie Fest), Jan 16th 2010, Gainesville (FL), USA;
  18. [Invited Talk], POLA Workshop, Oct 13th 2009, Brussels, Belgium;
  19. 5th Patras Workshop on Axions, WIMPs and WISPs, Jul 16th 2009, Durham, United Kingdom;
  20. Invisible Universe International Conference, Jul 2nd 2009, Paris, France;
  21. Journées Jeunes Chercheurs, Dec 4th 2008, Saint-Flour, France;
  22. Joint Meeting HLPW08, Mar 7th 2008, Spa, Belgium.

Posters presented

  1. 10th Patras Workshop on Axions, WIMPs and WISPs, Jul 3rd 2014, CERN, Switzerland;
  2. CERN European School of High-Energy Physics, Jun 8th-21st 2008, Herbeumont-sur-Semois, Belgium;
  3. Belgian Physical Society, general scientific meeting, May 21st 2008, Brussels, Belgium.

Language qualifications

  • English: Fluent;
  • French: Native speaker;
  • German: Elementary proficiency.

Everyday tools

Linux, C++, MPFR library, GSL library, Italian coffee.

Previous work in physics

Undergraduate thesis at the University of Liège (2007): "Axions et polarisation des quasars".

Advisors: J.R. Cudell and D. Hutsemékers.

Matériel de cours

Répétitions du cours de 3e bac physique, Mécanique Analytique II : MECA0202-2.

Curriculum Vitae

Last update 20th May 2015: my CV.

Other links

Personal ResearchGate page

Personal LinkedIn page



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