Assistant Professor
The Theoretical and Mathematical Physics, Astronomy and Astrophysics Division
+30 2610 996907
Hours Availability:
Short Bio


Name: Panagiota-Eleftheria


Place of Birth: Athens, Greece

Tel: 2610 996907

e-mail: pechris@physics.upatras.gr


1993: PhD in Astrophysics, Dept. of Physics, University of Patras, Greece (first class honors)

1989-1990: M.Sc in Observational Astronomy (by research), Victoria University of Manchester, UK

1984-1988: BSc in Physics , Dept. of Physics, University of Patras (top 5%)

1984: Secondary education from the  3rd  Lyceum Zografos, Athens  (192/10 out of 20).

Foreign Languages: English (B2), French (C2), Italian (certificato medio), Spanish (initial),


2012-today: Assistant professorDept. of Physics, University of Patras 2005-2012: Lecturer, Dept. of Physics, University of Patras  2002-2011: Teaching stuff of the Undergraduate Course Module “Introduction to Natural Sciences”, School of Sciences and Technology, Hellenic Open University

1993-1998: Research Associate, Dept of Astronomy, Victoria University of Manchester (total 9 months) 1994-1998: Post Doctorate Researcher, Astronomy Laoratory, Dept. of Physics, University of Patras 1991-1992: Honorary Research Assistant Victoria University of Manchester (total 3 months)



2005-current teaching of several undergraduate courses in Physics Dept (Astrophysics I , Astrophysics II, Introduction to Astronomy & Astrophysics , Astronomy Lab, Astrophysics Lab, Optics and Waves  Lab, Nuclear Physics Lab, in Geology Dept (Physics Lab I). Development of a variety of astronomy education materials, including online astronomy and astrophysics labs with access to on line data

2008-current Teaching of graduate course “Special Topics in Astrophysics” (Linux, Image processing, IRAF, preparation of observations, topics on observational astrophysics in optical)

2002-2010 Teaching stuff of the Undergraduate Course Module “Introduction to Natural Sciences”, School of Sciences and Technology, Hellenic Open University.

Supervisor (past/currently) of more than 17 Diploma Theses, 6 Masters and 3 PhD theses


University Textbooks in Greek  1) 2001: Goudis C.D  & Christopoulou P-E, «Astrophysics» (Introductory university book, Volumes I & II , p. 785) Hellenic Open University 22005, co-author of hypertext in the team of  developing educational material for the postgraduate course module “Motion, Constitution of Matter and fundamental Interactions”, (p. 385) Hellenic Open University 3) 2009,  Christopoulou P-E & Goudis C. D, “Introduction to Astronomy and Astrophysics” (Introductory university book) in electronic form  on the webpage of Dept. of Physics, University of Patras.

General Science Books (in Greek) 1) Goudis, C.D. and Christopoulou, P.-E.: 1993, “About astrology“, Diavlos Press, Athens, 82 pp. 2) Goudis, C.D. and Christopoulou, P.-E.: 1997, ‘’The pioneers of science and technology’’, Biographical Dictionary-Calendar, Diavlos Press, 564 pp

Books of general interest (translated from English) 1) “The Book of Cosmos” of SCIENTIFIC AMERICAN, (David H. Levy, A Byron Press book, St. Martin’s Press, New York) Alexandria Press, Athens, p. 450 2) « The Myth of Darwinism» R. Milton, , Diavlos Press, Athens, p. 380


Observational Astrophysics

  • 2009-current: CCD observations of eclipsing binaries, cataclysmic variables, detection of new variables, longterm (monitoring) projects of variability and follow-up ground based observations as support to space observations, detection of circubinary extrasolar planets
  • Development of neural networks in order to apply the concept of Eclipsing Binaries with Artificial intelligence (EBAI, Prsa)
  • 1990-2009: Detection and study of HII regions, Supernova remnants, Planetary nebulae. Photometric monitoring of AGN (active galactic nuclei)


Development and Applications of Novel Instrumentation and Experimental Methods in Astroparticle Physics

Construction, operation and signal processing of the HELYCON scintillation detectors for the HELYCON “HEllenic LYceum Cosmic Observatories Network” project. HELYCON is a cosmic ray telescope which utilizes, instead of light, extensive air showers produced when cosmic rays interact with the earth atmosphere, constructed at Physics Laboratory of the Hellenic Open University.  (http://www.helycon.gr/HELYCON/Home.html,http://physicslab.eap.gr./EN/Personnel.html

Astrophysical experience : 1) Imaging with narrow interferometric filters and image tubes and/or  the  Manchester Wide Field Camera  -ΜWFC 2) photoelectric photometry with the photometer of the Astronomy Laboratory of the University of Patras,  and  CCD photometry. 3) Spectroscopy with the high resolution Manchester Echelle Spectrometer- MES and the Royal Greenwich Observatory 4) CCD imaging 5) analysis of light and modeling  of eclipsing binary and multiple systems of stars 6) search for circumbinary planets with timing of the minima of low-mass eclipsing binaries and analysis of the (O-C) diagrams.

Operating systems: Linux Fedora, Ubuntu linux, Windows (XP, 7) Αstronomical software: IRAF, STSDAS,MIDAS, DS9, Spitzer Leopard, PHOEBE & PHOEBE Scripter, Virtual Observatory tools (VO-tools).

Observational experience :

  1. Installation and operation of the University Campus observatory “Mythodea” (named after the homonymous NASA “2001 Mars Odyssey” choral symphony by the Greek composer Vangelis Papathanassiou, Honorary Doctor of Physics Department, University of Patras)
  2. CCD photometry with 2.3 m Aristarchos te;escope at Xelmos Observatory, photometric observations with the 1.2 m telescope at the Kryoneri Observatory, CCD observations with the 1.3 telescope at Skinakas Observatory (Crete), CCD observations at Mythodea Observatory, University of Patras.
  3. Reduction of photometric and spectroscopic data from big telescopes (WHT, INT, UNAM, AAT)
Research Activities
  1. Solomos N., Whitehead M. J., Meaburn J., Goudis C. D., Christopoulou P.-E., Optical monitoring of the nuclear variability of the Seyfert galaxy NGC 4151, Astronomy & Astrophysics 229, 80-82, 1990
  2. Meaburn J., Christopoulou P.-E., Goudis C. D.,Compact fibre- optic format changers for a multislit echelle spectrometer- initial results on the Dumbbell nebula (NGC 6853), Monthly Notices of the Royal Astronomical Society 256, 97-102, 1992
  3. Christopoulou P.-E., Goudis C. D., Solomos N., Kemp S., NGC 4151 entering in an active phaseAstrophysics and Space Science 201, 297-302, 1992
  4. Christopoulou P.-E., Goudis C. D. Τhe Seyfert galaxy NGC 4151: Peak activity on the decline ?, Astronomy & Astrophysics 272, 407-410, 1993
  5. Meaburn J., Dyson J. E., Goudis C.D., Christopoulou P.-E., An Evolutionary Model for the Wolf-Rayet nebula NGC 2359, Astrophysics and Space Science 216, 281-283, 1994
  6. Goudis C. D., Christopoulou P.-E., Meaburn J., Dyson J. E., Expanding rings in the WR nebula NGC 2359Astronomy & Astrophysics 285, 631-639, 1994
  7. Christopoulou P.-E, Goudis C. D., Meaburn J., Dyson J. E., Clayton C. A., The kinematics of an ionized shell, NGC 7635, in the S162 complex, Astronomy & Astrophysics 295, 509-516, 1995
  8. Christopoulou, P.-E, Holloway A.J, Steffen W., Mundell C.G., Thean A.H.C., Goudis, C. D., Meaburn J., Pedlar A., Evidence for an outflow from the Seyfert galaxy NGC 4051, Monthly Notices of the Royal Astronomical Society 284, 385-394, 1997
  9. Clayton C.A, Meaburn J., Lopez J.A., Christopoulou P.-E , Goudis C.D, Imaging studies of localized, ionized flows in the Rosette nebula, Astronomy and Astrophysics 334, 264-268, 1998
  10. Boumis, P., Dickinson, C., Meaburn, J., Goudis, C.D., Christopoulou P.E., Lopez, J.A., Bryce, M. and Redman, M.P., Deep Ha imagery of the Eridanus shells, Monthly Notices of the Royal Astronomical Society 320, 61-65, 2001
  11. Meaburn, J., Boumis, P., Christopoulou P.E., Goudis, C.D., Bryce, M and Lo-pez, J.A, Global kinematics of the Dumbbell planetary nebula (NGC 6853, M27, PN G060.8-03.6), Revista Mexicana Astronomy Astrophysics, 41, 109., 2005
  12. P. Boumis, J. Alikakos, P. E. Christopoulou, F. Mavromatakis, E. M. Xilouris, C. D. Goudis, First optical light from the supernova remnant G 15.1-1.6, Astronomy & Astrophysics 481, 705, 2008
  13. G. Bourlis, P.E. Christopoulou, H. Fragoulis, N. Gizani, A. Leisos, A. Tsirigotis, S. Tza-marias, KM3Net Conceptual Design Report for a Deep-Sea Research, ISBN 978-90-6488-031-5, http://www.km3net.org/CDR/CDR-KM3NeT.pdf, 2008
  14. P. Boumis, E. M. Xilouris, J. Alikakos, P. E. Christopoulou, F. Mavromatakis, A. C. Katsiyannis, C. D. Goudis, Discovery of optical emission from the supernova remnant G 32.8-0.1 (Kes 78), Astronomy and Astrophysics 499, No3, 789, 2009
  15. A.Leisos, G. Bourlis, N. Gizani, P-E Christopoulou, A. Tsirigotis & S. Tzamarias, Calibration and optimization of a Very Large Neutrino telescope using Extensive Air ShowersNuclear Instruments and Methods in Physics Research Section A, Volume 626, S231-S233, 2011
  16. Christopoulou, P.-E, Papageorgiou, A. and Chrysopoulos, I., First Modern Photometric Investigation of the Puzzling W UMa Type Close Binary System of TZ Bootis, Astronomical Journal, 142, 99, 2011
  17. G. Bourlis, P.E. Christopoulou, I. Gialas. N. Gizani, A. Leisos, C. Papageorgiou, A. Tsirigotis, S. Tzamarias, KM3Net Technical design Report (TDR) for a Deep-Sea Research, X, http://www.km3net.org/TDR/TDRKM3NeT.pdf, 2011
  18. Christopoulou P.-E., Papageorgiou A., Vasileiadis T.& Tsantilas S., An Holistic View of the W UMa Type TY Boo, Astronomical Journal, 144, 149, 2012
  19. J. Alikakos, P. Boumis, P. E. Christopoulou, C. D. Goudis , Discovery of optical candidate supernova remnants in Sagittarius, Astronomy and Astrophysics,544, 140, 2012
  20. Christopoulou, P.-E, Papageorgiou, A. , Kleidis, S & Tsadilas, S, Τhe first photometric study and period analysis of the misclassified binary system V380 Cas, Astronomical Journal, 143, 30, 2012
  21. Papageorgiou, A.; Christopoulou, P. E.; Nikolidakis, G., Optical variability campaign for strong X-ray sources among eclipsing binaries, hcxa.confE.153P, , 2012
  22. Pribulla , T.; Vaňko, M.; Ammler-von Eiff, M.; Andreev, M.; Aslantürk, A.; Awadalla, N.; Baluďanský, D.; Bonanno, A.; Božić, H.; Catanzaro, G.; and 48 coauthors, The Dwarf project: Eclipsing binaries – precise clocks to discover exoplanets, Astronomische NachrichtenVol.333, Issue 8, 754, 2012
  23. Christopoulou, P.-E & Papageorgiou, A., An Extensive Analysis of the W UMa Type Binary FI Boo, Astronomical Journal 146, 157-168, 2013
  24. KM3NeT Collaboration; Adrián-Martínez, S.; Ageron, M.; Aguilar, J. A.; Aharonian, F.; Aiello, S.; Albert, A.; Alexandri, M.; Ameli, F.; Anassontzis, E. G.; and 305 coauthors, Detection potential of the KM3NeT detector for high-energy neutrinos from the Fermi bubbles, Astroparticle Physics, Volume 42, 7-14, 2013
  25. Papageorgiou, A.; Kleftogiannis, G.; Christopoulou, P.-E., An automated search of O’Connell effect from surveys of eclipsing binaries, Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 43, no. 3, 470-472, 2014
  26. Papageorgiou, A.; Christopoulou, P.-E., Light curve and detailed model of the triple eclipsing binary system FI Boo, Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 43, no. 3, 468-469, 2014
  27. Christopoulou, P.-E.; Papageorgiou, A.; Theodosiou, A., Analysis of detached eclipsing binaries of the LMC and SMC, Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 43, no. 3, 388-393, 2014
  28. Papageorgiou, A.; Christopoulou, P.-E., Absolute Parameters and Physical Nature of the Low-amplitude Contact Binary HI Draconis, Astronomical Journal 149, 168-175, 2015
  29. Papageorgiou, A.; Christopoulou, P.-E.; Pribulla, T.; Vanko, M, Refined investigation of the low-amplitude contact binary V1003 Her, Astrophysics and Space Science 357, 59-69, 2015
  30. Papageorgiou, A.; Christopoulou, P.-E. A New Look at the Eclipse Timing Variation Diagram Analysis of Selected 3-body W UMa Systems, ASPC, 496, 181P, 2015
  31. Christopoulou, P.-E.; Papageorgiou, A. A New Look at the Eclipse Timing Variation Diagram Analysis of Selected 3-body W UMa Systems, ASPC..496..210C, 2015
  32. Papageorgiou, A; Kleftogiannis, G; Christopoulou, P.-E. Eclipsing binary stars with extreme light curve asymmetries mined from large astronomical surveys,  EPJ Web of Conferences.152,03010P, 2017
  33. Papageorgiou, A.; Catelan, M. ;  Christopoulou, P.-E;  Drake, A.J; Djorgovski, S. G. ; An Updated Catalog of 4680 Northern Eclipsing Binaries with Algol-type Light-curve Morphology in the Catalina Sky Surveys, ApJS..238….4P, 2018
  34. Papageorgiou, A.; Catelan, M. ;  Christopoulou, P.-E;  Drake, A.J; Djorgovski, S. G. An Updated Catalog of 4680 Northern Eclipsing Binaries with Algol-type Light-curve Morphology in the Catalina Sky Surveys, ApJS..238….4P, 2018
  35. Papageorgiou, A.; Catelan, M. ;  Christopoulou, P.-E;  Drake, A.J; Djorgovski, S. G. Physical Parameters of Northern Eclipsing Binaries in the Catalina Sky Survey, ApJS, 242,6P, 2019
  36. Lalounta, E.; Papageorgiou, A.;Christopoulou, P. E. Catelan, M  An investigation of low-mass-ratio EW systems from the Catalina Sky Survey, CoSka. 50, 409L, 2020
  37. Zervas, K.; Christopoulou, E. -P.; Papageorgiou, A. Substellar and stellar companions in eclipsing binaries, CoSka, 50, 772, 2020
  38. Papageorgiou, A.; Christopoulou, P. -E.; Catelan, M. What we can learn from eclipsing binaries in large surveys: The case of EA Catalina systems, 2020CoSka..50..774P
  39. Papageorgiou, A.; Catelan, M. ;  Christopoulou, P.-E;  Drake, A.J; Djorgovski, S. G. Detection of period variations of eclipsing binaries in the Catalina Sky Survey, MNRAS.503.2979P, 2021
  40. Christopoulou, P-E ;Lalounta, E.; Papageorgiou, A.; Ferreira Lopes, C. E; Catelan, M.;Drake, A.J New low mass ratio contact binaries in the Catalina Sky Survey, MNRAS.512.1244C, 2022
  41. Papageorgiou, A. ; Christopoulou, P-E;  Ferreira Lopes, C. E.;Lalounta, E; Catelan, M; Drake, A J. Three Ultra-short-period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys, AJ….165…80P, 2023
  42. Papageorgiou, A. ; Christopoulou, P-E; Lalounta, E; Ferreira Lopes, C. E; Catelan, M.;Drake; Hantzios, P.;Alikakos, I. A Unique Low-mass-ratio Contact Eclipsing Binary System under the Period Cutoff, ApJ…952..141P, 2023
  43. Zervas, K; Christopoulou, P-E. and Papageorgiou, A..Investigating Period Variability Mechanisms in Eclipsing Binary Stars through Eclipsing Time Variation Analysis: A Case Study of TZ Bootis, ApJ 2023 (in press)
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