Melis Irfan

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I joined the CosmoStat laboratory in September 2016 as a post-doctoral researcher working with Jérôme Bobin.

I work on the component separation of foreground emissions from signals of cosmological significance.

Contact information 

Email: melis.irfan@cea.fr

 

 

 

Research interests 

My primary research interests involve the Interstellar Medium (ISM), specifically spatially and spectrally modeling diffuse Galactic emissions to support the improvement of CMB component separation techniques.

I have worked on C-Band All-Sky Survey (C-BASS) which is producing maps of all-sky intensity and polarisation at a central frequency of 5 GHz using two single-dish radio antennae. This project enabled me to study synchrotron and free-free emission in detail: separating these two emissions within the Galactic plane and constraining the spectral index of synchrotron emission.     

Working at the CosmoStat laboratory extends my research into higher frequencies, using sparsity-based methods to separate thermal dust emission from the CMB in both intensity and polarisation. The goal being to provide all-sky maps of a single emission to both astrophysicists interested in the ISM and cosmologists interested in CMB B-mode detections.   

Teaching activities    

Mathematics for undergraduate physics students, Manchester University, 2012 - 2014

Education 

  • PhD Astrophysics and Radio Astronomy, Jodrell Bank Centre for Astrophysics, 2014.
  • MPhys, University of York , 2010

My thesis project was on observing diffuse Galactic emission with C-BASS. I worked on the both the instrumentation and data reduction pipeline of C-BASS North and produced an early science paper for the project on the separation of free-free and synchrotron emission within the Galactic plane. 

Work

Software engineer, safety-critical aerospace software design, 2014 - 2016  

Publications

  • Irfan, M.O. et al. (2015), ‘The C-Band All Sky Survey: Separation of Diffuse Galactic Emissions at 5 GHz’ , MNRAS 448, 3572.
  • King, O.G. et al. (2014),‘The C-Band All-Sky Survey (C-BASS): design and implementation of the northern receiver’, MNRAS, 438, 2426.
  • Hargreaves, R.J. et al. (2012), ‘Hot Methane Line Lists for Exoplanet and Brown Dwarf Atmospheres’, ApJ, 757, 46

Talks and Conferences 

  • ‘Cosmology in the SKA era: The C-Band All Sky Survey’, Talk, NAM, June 2014, University of Portsmouth.
  • ‘C-BASS: Separating free-free and synchrotron emission at 5 GHz”, Poster, Planck conference, Apr 2013, ESTEC, Netherlands.
  • ‘Anomalous emission with C-BASS’, Talk, AME Workshop, July 2012, University of Manchester.
  • ‘Synchrotron foreground emission with C-BASS’, Talk, TRR33 Winter school, Dec 2011, Passo del Tonale.
  • ‘C-BASS: Analysis of commissioning data’, Poster, Planck conference, Feb 2012, Bologna.
  • ‘The C-Band All Sky Survey’, Poster, NAM, April 2011, Llandudno.
  • ‘C-BASS: Galactic emission at 5 GHz’, Poster, Planck conference, Jan 2011, Paris.