Paul Callanan


Physics
University College Cork

T: +353 21 4903211
E: paulc@miranda.ucc.ie

Research Interests

The goal of my work is to combine X-ray, optical and IR observations from ground based and orbiting observatories to study the processes occurring in neutron stars and black holes as they interact with their companions in binary star systems. I work with a long list of collaborators include workers at the Harvard Smithsonian Center for Astrophysics in Cambridge (MA), the Department of Astronomy in Berkeley, San Francisco State University, Notre Dame, the Open University, etc.

Specifically we seek to address such issues as:

             Can we reliably measure the masses of black holes and neutron stars ?

             Are there any other black hole signatures aside from their mass ?

             How do neutron star/black hole accretion disks evolve ?

             What are the main mechanisms by  which they radiate?

             How many black holes exist in our Galaxy ?

 

My long term goals are

 

(i)                 To refine our current estimates of black hole and neutron star mass estimates. The strategy is driven by the need to (a) identify the most reliable means for measuring such masses and (b) using these to compare with binary star evolution models, SN theory, and employing the mass estimates for accurate black hole spin estimates. For neutron stars, these measurements allow us to better constrain the equation of state of the degenerate material in their interiors.

(ii)                Develop models for the dynamical evolution of accretion disks around these compact stars. Our recent observations show these disks to eccentric and precessing, and they may also be warped out of the orbital plane. However, there has yet to be a details reconciliation between e.g. SPH codes for such disks and observation.

(iii)             In the longer term, I would also wish to expand the work of the group into hardware development collaboration with other research groups (e.g. in Tyndall).

 

 

 

Book Chapters

YearPublication
(1996)'An EUVE Detection of a Low-Mass X-Ray Binary? AC211 in M15 [X4068]'
Callanan, P. J.; Bookbinder, J.; Drake, J. J.; Fruscione, A.; (1996) 'An EUVE Detection of a Low-Mass X-Ray Binary? AC211 in M15 [X4068]' In: Astrophysics in the Extreme Ultraviolet. [No details]
(1993)'CVs in Globular Clusters: V101 in M5 [X4072]'
Callanan, P. J.; Charles, P. A.; Naylor, T.; (1993) 'CVs in Globular Clusters: V101 in M5 [X4072]' In: Cataclysmic Variables and Related Physics. [No details]
(1993)'The Orbital Light Curve of PSR1957+20 [X4071]'
Callanan, P. J.; Van Paradijs, J.; Rengelink, R.; (1993) 'The Orbital Light Curve of PSR1957+20 [X4071]' In: The Evolution of X-Ray Binaries. [No details]
(1993)'Optical Observations of the X-Ray Nova J0422+32 [X4070]'
Zhao, P.; Callanan, P. J.; Garcia, M. R.; McClintock, J. E.; (1993) 'Optical Observations of the X-Ray Nova J0422+32 [X4070]' In: The Evolution of X-Ray Binaries. [No details]

Peer Reviewed Journals

YearPublication
(2008)'Optical Photometry and Spectroscopy of The Accretion-Powered Millisecond Pulsar Hete J1900.1-2455'
Elebert, P, Callanan, PJ, Filippenko, AV, Garnavich, PM, Mackie, G, Hill, JM, Burwitz, V; (2008) 'Optical Photometry and Spectroscopy of The Accretion-Powered Millisecond Pulsar Hete J1900.1-2455' [DOI] [Details]
(2007)'The Optical and IR lightcurve of PSR B 1957+20'
Reynolds, M., Callanan, P.J., et al; (2007) 'The Optical and IR lightcurve of PSR B 1957+20' [Details]
(2007)'Keck Infrared Observations of Gro J0422+32 In Quiescence'
Reynolds, MT, Callanan, PJ, Filippenko, AV; (2007) 'Keck Infrared Observations of Gro J0422+32 In Quiescence' [DOI] [Details]
(2003)'Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119'
Torres, MAP and Callanan, PJ and Garcia, MR; (2003) 'Time-resolved spectroscopy of the M15 X-ray binary AC211/X2127+119' [Details]
(2002)'Optical spectral monitoring of XTE J1118+480 in outburst: Evidence for a precessing accretion disk?'
Torres, MAP and Callanan, PJ and Garcia, MR and McClintock, JE and Garnavich, P and Balog, Z and Berlind, P and Brown, WR and Calkins, M and Mahdavi, A; (2002) 'Optical spectral monitoring of XTE J1118+480 in outburst: Evidence for a precessing accretion disk?' [Details]
(2001)'New Evidence for Black Hole Event Horizons from Chandra'
Garcia, Michael R. McClintock, Jeffrey E. Narayan, Ramesh, Callanan, Paul J., Barret, Didier, Chandra; (2001) 'New Evidence for Black Hole Event Horizons from Chandra' [Details]
(2000)'An EUVE observation of the globular cluster NGC 1851: The second EUV detection of a low mass X-ray binary?'
Callanan, PJ and Drake, JJ and Fruscione, A and Christian, D; (2000) 'An EUVE observation of the globular cluster NGC 1851: The second EUV detection of a low mass X-ray binary?' [Details]
(1999)'VLA Observations of Four Bright Globular Cluster X-Ray Sources'
Machin, G. Lehto, H. J. McHardy, I. M. Callanan, P.J. ; (1999) 'VLA Observations of Four Bright Globular Cluster X-Ray Sources' [Details]
(1999)'Two neutron star soft X-ray transients in quiescence: 4U 2129+47 and EXO 0748-676'
Garcia, MR and Callanan, PJ; (1999) 'Two neutron star soft X-ray transients in quiescence: 4U 2129+47 and EXO 0748-676' [Details]
(1999)'Aquila X-1 in outburst and quiescence'
Garcia, MR and Callanan, PJ and McCarthy, J and Eriksen, K and Hjellming, RM; (1999) 'Aquila X-1 in outburst and quiescence' [Details]
(1998)'A Deep Extreme Ultraviolet Explorer Observation of the Extreme Ultraviolet Transient RE J1255+266'
Drake, Jeremy J. Fruscione, Antonella Hoare, Melvin G., Callanan, Paul J. ; (1998) 'A Deep Extreme Ultraviolet Explorer Observation of the Extreme Ultraviolet Transient RE J1255+266' [Details]
(1998)'Power-law decays in the optical counterparts of GRB 970228 and GRB 970508'
Garcia, MR and Callanan, PJ and Moraru, D and McClintock, JE and Tollestrup, E and Willner, SP and Hergenrother, C and Robinson, CR and Kouveliotou, C and van Paradijs, J; (1998) 'Power-law decays in the optical counterparts of GRB 970228 and GRB 970508' [Details]
(1998)'The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307'
Callanan, PJ and Garnavich, PM and Koester, D; (1998) 'The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307' [Details]
(1997)'The Dynamics of M15: Observations of the Velocity Dispersion Profile and Fokker-Planck Models [X4045]'
Dull, J. D.; Cohn, H. N.; Lugger, P. M.; Murphy, B. W.; Seitzer, P. O.; Callanan, P. J.; Rutten, R. G. M.; Charles, P. A.; (1997) 'The Dynamics of M15: Observations of the Velocity Dispersion Profile and Fokker-Planck Models [X4045]' [Details]
(1996)'Observations of GRO JO422+32. III. .A Low-Inclination Black Hole X-Ray Nova [X4049]'
Callanan, P. J.; Garcia, M. R.; McClintock, J. E.; Zhao, P.; Remillard, R. A.; Haberl, F; (1996) 'Observations of GRO JO422+32. III. .A Low-Inclination Black Hole X-Ray Nova [X4049]' [Details]
(1996)'Infrared Observations of an Energetic Outburst in GRS 1915+105 [X4046]'
Mirabel, I. F.; Rodriguez, L. F.; Chaty, S.; Sauvage, M.; Gerard, E.; Duc, P.-A; Castro-Tirado, A.; Callanan, P. J.; (1996) 'Infrared Observations of an Energetic Outburst in GRS 1915+105 [X4046]' [Details]
(1996)'On the Mass of the Black Hole in Gs 2000+25 [X4048]'
Callanan, P. J.; Garcia, M. R.; Fillippenko, A. V.; McLean, I.; Teplitz, H.; (1996) 'On the Mass of the Black Hole in Gs 2000+25 [X4048]' [Details]
(1996)'An Atlas of Optical Continuum and Line Emission From Low-Mass X-Ray Binaries [X4047]'
Shahbaz, T.; Smale, A. P.; Naylor, T.; Charles, P. A.; Van Paradijs, J.; Hassall, B. J. M.; Callanan, P. J.; (1996) 'An Atlas of Optical Continuum and Line Emission From Low-Mass X-Ray Binaries [X4047]' [Details]
(1996)'Observations of the X-Ray Nova GRO JO422+32. II. Optical Spectra Approaching Quiescence. [X4050]'
Garcia, M. R.; Callanan, P. J.; McClintock, J. E.; Zhao, P.; (1996) 'Observations of the X-Ray Nova GRO JO422+32. II. Optical Spectra Approaching Quiescence. [X4050]' [Details]
(1995)'Optical Observations of 4U 1915-05 and the Stability of the Long Term Epheremis [X4052]'
Callanan, P. J.; Grindlay, J. E.; Cool, A. M.; (1995) 'Optical Observations of 4U 1915-05 and the Stability of the Long Term Epheremis [X4052]' [Details]
(1995)'X-Ray Observations of NGC 1851 and the Globular Cluster LMXBs [X4053]'
Callanan, P. J.; Penny A.J.!Charles, P. A.; (1995) 'X-Ray Observations of NGC 1851 and the Globular Cluster LMXBs [X4053]' [Details]
(1995)'Spectroscopic Identification of Probable Cataclysmic Variables in the Globular Cluster NGC 6397. [X4051]'
Grindlay, J. E.; Cool, A. M.; Callanan, P. J.; Bailyn, C. D.; Cohn, H. N.; Lugger, P. M.; (1995) 'Spectroscopic Identification of Probable Cataclysmic Variables in the Globular Cluster NGC 6397. [X4051]' [Details]
(1995)'The Faint X-Ray Sources in and Out of Omega Centauri: X-Ray Observations and Optical Identifications [X4056]'
Cool, A. M.; Grindlay, J. E.; Bailyn, C. D.; Callanan, P. J.; Hertz, P.; (1995) 'The Faint X-Ray Sources in and Out of Omega Centauri: X-Ray Observations and Optical Identifications [X4056]' [Details]
(1995)'Observations of the X-Ray Nova GRO JO422+32. 1: Outburst and the Decay to Quiescence [X4054]'
Callanan, P. J.; Garcia, M. R.; McClintock, J. E.; Zhao, P.; Remillard, R. A.; Bailyn, C. D.; Orosz, J. A.; Harmon, B. A.; Paciesas, W. S.; (1995) 'Observations of the X-Ray Nova GRO JO422+32. 1: Outburst and the Decay to Quiescence [X4054]' [Details]
(1995)'THE ORBITAL LIGHT-CURVE OF PSR-1957+20'
CALLANAN, PJ and VANPARADIJS, J and RENGELINK, R; (1995) 'THE ORBITAL LIGHT-CURVE OF PSR-1957+20' [Details]
(1995)'The Orbital Light Curve of PSR 1957 + 20 [X4055]'
Callanan, P. J.; Van Paradijs, J.; Rengelink, R.; (1995) 'The Orbital Light Curve of PSR 1957 + 20 [X4055]' [Details]
(1994)'A 60-NIGHT CAMPAIGN ON DWARF NOVAE .1. PHOTOMETRIC VARIABILITY OF SU UMA AND YZ CNC'
VANPARADIJS, J and CHARLES, PA and HARLAFTIS, ET and AREVALO, MJ and BARUCH, JEF and CALLANAN, PJ and CASARES, J and DHILLON, VS and GIMENEZ, A and GONZALEZ, R and MARTINEZPAIS, IG and JONES, DHP and HASSALL, BJM and HELLIER, C and KIDGER, MR and LAZARO, C and MARSH, TR and MASON, KO and MUKAI, K and NAYLOR, T and REGLERO, V and RUTTEN, RGM and SMITH, RC; (1994) 'A 60-NIGHT CAMPAIGN ON DWARF NOVAE .1. PHOTOMETRIC VARIABILITY OF SU UMA AND YZ CNC' [Details]
(1993)'Optical and X-Ray Observations of the Low-Mass X-Ray Binary EXO 0748 - 676 [X4059]'
Thomas, B.; Corbet, R.; Augusteijn, T.; Callanan, P. J.; Smale, A. P.; (1993) 'Optical and X-Ray Observations of the Low-Mass X-Ray Binary EXO 0748 - 676 [X4059]' [Details]
(1993)'Spectroscopic and Photometric Observations of Supernova 1987A. VII --- Days 793 to 1770 [X4058]'
Caldwell, J. A. R.; Menzies, J. W.; Banfield, R. M.; Catchpole, R. M.; Whitelock, P. A.; Feast, M. W.; Lloyd Evans, T. H. H.; Sekiguchi, K.; Zijlstra, A.; Allen, D. A.; Bell, S. A.; Blades, J. C.; Buckley, D. A. H.; Byrne, P. B.; Callanan, P. J.; Collins; (1993) 'Spectroscopic and Photometric Observations of Supernova 1987A. VII --- Days 793 to 1770 [X4058]' [Details]
(1993)'ACCRETION DISKS IN LOW-MASS X-RAY BINARIES'
CALLANAN, PJ; (1993) 'ACCRETION DISKS IN LOW-MASS X-RAY BINARIES' [Details]
(1992)'Optical and X-Ray Observations of EXO 0748 - 676 [X4067]'
Thomas, B.; Corbet, R. H. D.; Augusteijn, T.; Callanan, P. J.; Smale, A. P.; (1992) 'Optical and X-Ray Observations of EXO 0748 - 676 [X4067]' [Details]
(1992)'The 14.8-h Orbital Period of GX339-4 [X4060]'
Callanan, P. J.; Charles, P. A.; Honey, W. B.; Thorstensen, J. R.; (1992) 'The 14.8-h Orbital Period of GX339-4 [X4060]' [Details]
(1992)'Optical Observations of Low-Mass X-Ray Binaries and Millisecond Pulsars [X4061]'
Callanan, P.J.; (1992) 'Optical Observations of Low-Mass X-Ray Binaries and Millisecond Pulsars [X4061]' [Details]
(1991)'OPTICAL STUDIES OF V404 CYG, THE X-RAY TRANSIENT GS2023 + 338 .1. THE 1989 OUTBURST AND DECLINE'
CASARES, J and CHARLES, PA and JONES, DHP and RUTTEN, RGM and CALLANAN, PJ; (1991) 'OPTICAL STUDIES OF V404 CYG, THE X-RAY TRANSIENT GS2023 + 338 .1. THE 1989 OUTBURST AND DECLINE' [Details]
(1991)'THE SOFT-X-RAY TRANSIENT GS2000+25 .1. AN 8.3-HR MODULATION DURING OUTBURST'
CHARLES, PA and KIDGER, MR and PAVLENKO, EP and PROKOFIEVA, VV and CALLANAN, PJ; (1991) 'THE SOFT-X-RAY TRANSIENT GS2000+25 .1. AN 8.3-HR MODULATION DURING OUTBURST' [Details]
(1991)'DETECTION OF BINARIES IN THE CORE OF THE GLOBULAR-CLUSTER M15 USING CALCIUM EMISSION-LINES'
MURPHY, BW and RUTTEN, RGM and CALLANAN, PJ and SEITZER, P and CHARLES, PA and COHN, HN and LUGGER, PM; (1991) 'DETECTION OF BINARIES IN THE CORE OF THE GLOBULAR-CLUSTER M15 USING CALCIUM EMISSION-LINES' [Details]
(1991)'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .3. V4 IN M30 DURING QUIESCENCE'
MACHIN, G and ALLINGTONSMITH, J and CALLANAN, PJ and CHARLES, PA and HASSALL, BJM and MASON, KO and MUKAI, K and NAYLOR, T and SMALE, AP and VANPARADIJS, J; (1991) 'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .3. V4 IN M30 DURING QUIESCENCE' [Details]
(1991)'THE SOFT-X-RAY TRANSIENT GS2000 + 25 .2. AN ELLIPSOIDAL MODULATION IN QUIESCENCE'
CALLANAN, PJ and CHARLES, PA; (1991) 'THE SOFT-X-RAY TRANSIENT GS2000 + 25 .2. AN ELLIPSOIDAL MODULATION IN QUIESCENCE' [Details]
(1990)'The identity and position of X-ray sources in globular clusters - Radio emission from NGC6712'
Lehto, Harry J. Machin, Graham McHardy, Ian M. Callanan, Paul J. ; (1990) 'The identity and position of X-ray sources in globular clusters - Radio emission from NGC6712' [Details]
(1990)'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .2. THE CV CANDIDATES IN M71'
MACHIN, G and ALLINGTONSMITH, J and CALLANAN, PJ and CHARLES, PA and HASSALL, BJM and MASON, KO and MUKAI, K and NAYLOR, T and SMALE, AP and VANPARADIJS, J; (1990) 'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .2. THE CV CANDIDATES IN M71' [Details]
(1990)'SPECTROSCOPY OF FAINT, HIGH-LATITUDE CATACLYSMIC VARIABLE CANDIDATES'
MUKAI, K and MASON, KO and HOWELL, SB and ALLINGTONSMITH, J and CALLANAN, PJ and CHARLES, PA and HASSALL, BJM and MACHIN, G and NAYLOR, T and SMALE, AP and VANPARADIJS, J; (1990) 'SPECTROSCOPY OF FAINT, HIGH-LATITUDE CATACLYSMIC VARIABLE CANDIDATES' [Details]
(1990)'CYCLOTRON HUMPS IN AM HER SYSTEMS - VARIATIONS AROUND THE ORBIT IN DP-LEO'
CROPPER, M and MUKAI, K and MASON, KO and SMALE, AP and CHARLES, PA and MITTAZ, JPD and MACHIN, G and HASSALL, BJM and CALLANAN, PJ and NAYLOR, T and VANPARADIJS, J; (1990) 'CYCLOTRON HUMPS IN AM HER SYSTEMS - VARIATIONS AROUND THE ORBIT IN DP-LEO' [Details]
(1990)'Optical spectroscopy of V 1341 Cygni, the optical counterpart of Cygnus X-2'
van Paradijs, J. Allington-Smith, J. Callanan, P. et al. ; (1990) 'Optical spectroscopy of V 1341 Cygni, the optical counterpart of Cygnus X-2' [Details]
(1990)'Accretion Disc Evolution in Cataclysmic Variables - the 1988 International Time Project in La-Palma'
Charles, P. A. Arevalo, M. J. Baruch, J. .., Callanan, Paul J., et al. ; (1990) 'Accretion Disc Evolution in Cataclysmic Variables - the 1988 International Time Project in La-Palma' [Details]
(1990)'AN 8.15-HOUR MODULATION IN THE LIGHT-CURVE OF LMC X-2'
CALLANAN, PJ and CHARLES, PA and VANPARADIJS, J and VANDERKLIS, M and PEDERSEN, H and HARLAFTIS, ET; (1990) 'AN 8.15-HOUR MODULATION IN THE LIGHT-CURVE OF LMC X-2' [Details]
(1990)'OPTICAL AND X-RAY OBSERVATIONS OF 4U0614+09'
MACHIN, G and CALLANAN, PJ and CHARLES, PA and THORSTENSEN, J and BROWNSBERGER, K and CORBET, RHD and HAMWEY, R and HARLAFTIS, ET and MASON, KO and MUKAI, K; (1990) 'OPTICAL AND X-RAY OBSERVATIONS OF 4U0614+09' [Details]
(1989)'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .1. V 101 IN M5 DURING QUIESCENCE AND OUTBURST'
NAYLOR, T and ALLINGTONSMITH, J and CALLANAN, PJ and CHARLES, PA and HASSALL, BJM and MACHIN, G and MASON, KO and SMALE, AP and VANPARADIJS, J; (1989) 'WHT OBSERVATIONS OF CATACLYSMIC VARIABLES IN GLOBULAR-CLUSTERS .1. V 101 IN M5 DURING QUIESCENCE AND OUTBURST' [Details]
(1989)'DISCOVERY OF THE 10.6 HR ORBITAL PERIOD OF CAL87 - AN ECLIPSING LOW-MASS X-RAY BINARY IN THE LARGE MAGELLANIC CLOUD'
CALLANAN, PJ and MACHIN, G and NAYLOR, T and CHARLES, PA; (1989) 'DISCOVERY OF THE 10.6 HR ORBITAL PERIOD OF CAL87 - AN ECLIPSING LOW-MASS X-RAY BINARY IN THE LARGE MAGELLANIC CLOUD' [Details]
(1989)'THE OPTICAL LIGHT-CURVE OF PSR1957+20'
CALLANAN, PJ and CHARLES, PA and VANPARADIJS, J; (1989) 'THE OPTICAL LIGHT-CURVE OF PSR1957+20' [Details]
(1989)'A SEARCH FOR THE OPTICAL COUNTERPART OF THE BINARY MILLISECOND PULSAR PSR-1855 + 09'
CALLANAN, PJ and CHARLES, PA and HASSAL, BJM and MACHIN, G and MASON, KO and NAYLOR, T and SMALE, AP and VANPARADIJS, J; (1989) 'A SEARCH FOR THE OPTICAL COUNTERPART OF THE BINARY MILLISECOND PULSAR PSR-1855 + 09' [Details]
(1988)'Optical observations of the eclipsing binary radio pulsar PSR1957 + 20'
van Paradijs, J. Allington-Smith, J. Callanan, P. , et al. ; (1988) 'Optical observations of the eclipsing binary radio pulsar PSR1957 + 20' [Details]
(1988)'ROTATIONAL MODULATION AND FLARES ON RS-CVN AND BY-DRA SYSTEMS .8. SIMULTANEOUS EXOSAT AND H-ALPHA OBSERVATIONS OF A FLARE ON THE DME STAR-GL644AB (WOLF-630) ON 24/25 AUGUST 1985'
DOYLE, JG and BUTLER, CJ and CALLANAN, PJ and TAGLIAFERRI, G and DELAREZA, R and WHITE, NE and TORRES, CA and QUAST, G; (1988) 'ROTATIONAL MODULATION AND FLARES ON RS-CVN AND BY-DRA SYSTEMS .8. SIMULTANEOUS EXOSAT AND H-ALPHA OBSERVATIONS OF A FLARE ON THE DME STAR-GL644AB (WOLF-630) ON 24/25 AUGUST 1985' [Details]
(1987)'Accretion disc coronae and the X-ray source in M15'
Fabian, A. C. Guilbert, P. W. Callanan, P. J5; (1987) 'Accretion disc coronae and the X-ray source in M15' [Details]
(1987)'EXOSAT OBSERVATIONS OF THE X-RAY SOURCE IN M15'
CALLANAN, PJ and FABIAN, AC and TENNANT, AF and REDFERN, RM and SHAFER, RA; (1987) 'EXOSAT OBSERVATIONS OF THE X-RAY SOURCE IN M15' [Details]

Conference Publications

YearPublication
(2007)Proceedings of IAU Symposium #238
Reynolds, M.T., Callanan, P.J., et al; (2007) IR contamination in quiescent XRN Proceedings of IAU Symposium #238 Prague, Czech Republic, [Details]
(2007)Proceedings of IAU Symposium #240
Hourihane, A. P., Callanan, P. J., Cool, A. M.; (2007) An Optical Search for Dwarf Novae in M22 . In: W.I. Hartkopf, E.F. Guinan and P. Harmanec eds. Proceedings of IAU Symposium #240 Prague, Czech Republic, [Details]
(2007)Proceedings of IAU Symposium #238
Elebert, P.; Callanan, P. J.; Russell, L.; Shaw, S. E.; (2007) Optical, ultraviolet and X-ray analysis of the black hole candidate BG Geminorum Proceedings of IAU Symposium #238 Prague, Czech Republic, [Details]
(2006)Proceedings of the 230th Symposium of the International Astronomical Union
Reynolds, M.T., et al ; (2006) The optical & IR lightcurve of PSR B1957+20 . In: E. J. A. Meurs; G. Fabbiano eds. Proceedings of the 230th Symposium of the International Astronomical Union Dublin, Ireland, , pp.55-56 [Details]
(2006)Proceedings of the 230th Symposium of the International Astronomical Union
Reynolds, M.T., Elebert, P., Callanan, P.J., et al ; (2006) Optical observations of IGR J00291+5934 in the post outburst phase Proceedings of the 230th Symposium of the International Astronomical Union Dublin, Ireland, [Details]
(2006)Proceedings of the 230th Symposium of the International Astronomical Union
Hourihane, A., et al ; (2006) An Optical Outburst of the Cataclysmic Variable in M22 . In: E. J. A. Meurs; G. Fabbiano eds. Proceedings of the 230th Symposium of the International Astronomical Union Dublin, Ireland, , pp.53-55 [Details]
(2006)Proceedings of the 230th Symposium of the International Astronomical Union
Callanan, P.J.; (2006) Key X-ray sources in our Galaxy . In: E. J. A. Meurs; G. Fabbiano eds. Proceedings of the 230th Symposium of the International Astronomical Union Dublin, Ireland, , pp.7-15 [Details]
(2005)AIP Conference Proceedings
Naik, S., et al ; (2005) BeppoSAX observations of the X-ray binary pulsar GX 1+4 AIP Conference Proceedings , pp.593-598 [Details]
(2002)in The Physics of Cataclysmic Variables and Related Objects, Astronomical Society of the Pacific Conference Series
Callanan, P.J., et al; (2002) The IR Counterpart of GX 17+2 . In: Gansicke, Beuermann and Reinsch eds. in The Physics of Cataclysmic Variables and Related Objects, Astronomical Society of the Pacific Conference Series , pp.275-275 [Details]
(2002)Doppler Maps of XTE J1118+480 in Outburst
Peres-Torres, M.A., Callanan, p.J., et al.; (2002) in The Physics of Cataclysmic Variables and Related Objects, Astronomical Society of the Pacific Conference Series . In: Gansicke, Beuermann and Reinsch eds. Doppler Maps of XTE J1118+480 in Outburst [Details]
(1999)in X-ray Astronomy, American Institute of Physics Conference Proceedings
Callanan, P.J., et al; (1999) Keck K-band observations of Low Mass X-ray Binaries . In: White, Malaguti and Palumbo eds. in X-ray Astronomy, American Institute of Physics Conference Proceedings Bologna, [Details]
(1999)in X-ray Astronomy, American Institute of Physics Conference Proceedings
Callanan, P.J., et el; (1999) An EUVE observations of the Globular Cluster NGC 1851 . In: White, Malaguti and Palumbo eds. in X-ray Astronomy, American Institute of Physics Conference Proceedings Bologna, [Details]
(1997)Proceedings of the 13th North American Workshop on CVs
Garcia, M. R. McClintock, J. E. Narayan, R. Callanan, P. J.; (1997) Black Hole Event Horizons and X-ray Luminosities--Update'1997, 506 . In: S. Howell, E. Kuulers, C. Woodward eds. Proceedings of the 13th North American Workshop on CVs San Francisco, [Details]
(1997)Accretion Phenomena and Related Outflows IAU Colloquium 163. ASP Conference Series
Garcia, M.R., et al ; (1997) Optical and IR Observations of AQL X-1 . In: D. T. Wickramasinghe G. V. Bicknell and L. Ferrario eds. Accretion Phenomena and Related Outflows IAU Colloquium 163. ASP Conference Series [Details]
(1995)Proceedings of the 158th colloquium of the International Astronomical Union
Garcia M.R., et al ; (1995) The X-ray nova GRO J422+32 in decline and quiescence . In: A. Evans and Janet H. Wood eds. Proceedings of the 158th colloquium of the International Astronomical Union Keele, [Details]
(1995)in Astrophysics in the extreme ultraviolet - Proceedings of colloquium no. 152 of the International Astronomical
Callanan, P.J., et al ; (1995) An EUVE Detection of a Low-Mass X-ray Binary ? AC211 in M15 . In: Stuart Bowyer and Roger F. Malina eds. in Astrophysics in the extreme ultraviolet - Proceedings of colloquium no. 152 of the International Astronomical [Details]
(1994)in proc of American Institute of Physics Conf 308, `The Evolution of X-ray Binaries'
Zhao, P., et al ; (1994) Optical Observations of the X-ray Nova J0422+32 . In: S.S. Holt and C.S. Day eds. in proc of American Institute of Physics Conf 308, `The Evolution of X-ray Binaries' [Details]
(1994)in proc of American Institute of Physics Conf The Evolution of X-ray Binaries
Callanan, P.J.; (1994) The Orbital Lightcurve of PSR1957+20 . In: S.S. Holt and C.S. Day eds. in proc of American Institute of Physics Conf The Evolution of X-ray Binaries [Details]
(1993)in proc of `Cataclysmic Variables and Related Physics', 2nd Technion Haifa Conference
Callanan, P.J., et al ; (1993) CVs in Globular Clusters: V101 in M5 . In: Regev and Shaviv eds. in proc of `Cataclysmic Variables and Related Physics', 2nd Technion Haifa Conference Eilat, Israel, [Details]
(1993)in Proc. of the 23rd ESLAB Symposium on X-ray Astronomy
Charles, P.A., et al ; (1993) The Bright X-ray Transient GS2023+338 (=V404 Cyg) in Optical Outburst and Decline . In: J. Hunt and B. Battrick eds. in Proc. of the 23rd ESLAB Symposium on X-ray Astronomy Bologna, [Details]
(1991)the 6th I.A.P. Meeting - I.A.U. Colloquium No. 129
Callanan, P.J., et al ; (1991) A long term, multiwavelength campaign on SU UMa . In: Bertout, Collin-Souffrin, Lasota and Tran Thanh van eds. the 6th I.A.P. Meeting - I.A.U. Colloquium No. 129 Paris, France, [Details]
(1990)Accretion Powered Compact Binaries
Machin, G., et al ; (1990) WHT Spectroscopy of Globular Cluster CVs' in Accretion Powered Compact Binaries . In: C.W. Mauche eds. Accretion Powered Compact Binaries Santa Fe, [Details]
(1990)Accretion Powered Compact Binaries
Callanan, P.J., et al ; (1990) The 14.8 hour orbital period of GX339-4 . In: C.W. Mauche eds. Accretion Powered Compact Binaries Santa Fe, [Details]
(1990)Accretion Powered Compact Binaries
Callanan, P.J., et al ; (1990) The LMXB in M15 . In: C.W. Mauche eds. Accretion Powered Compact Binaries [Details]
(1989)23rd ESLAB Symposium on X-ray Astronomy
Callanan, P.J., and Charles, P.A.; (1989) Optical Observations of GS2000+25 . In: J. Hunt and B. Battrick eds. 23rd ESLAB Symposium on X-ray Astronomy [Details]
(1989)23rd ESLAB Symposium on X-ray Astronomy
Callanan, P.J. and Charles, P.A.; (1989) The Low Mass X-ray Binaries in the LMC . In: J. Hunt and B. Battrick eds. 23rd ESLAB Symposium on X-ray Astronomy [Details]

Conference Contributions

YearPublication
(2006),
Callanan P.J.; (2006) Key X-ray sources in our Galaxy. [Oral Presentation], , Dublin , 01-AUG-06 - 01-AUG-06
(2006),
Callanan P.J.; (2006) Accreting ms X-ray Pulsars. [Oral Presentation], , Melbourne, Australia , 01-DEC-06 - 01-DEC-06
(2006),
Callanan P.J.; (2006) Optical Observations of Quiescent Low Mass X-ray Binary Pulsar Systems. [Oral Presentation], , University College Cork , 01-MAY-06 - 01-MAY-06
(2004),
Callanan P.J.; (2004) Galactic Black Hole X-ray Binaries. [Oral Presentation], , Dublin City University , 01-APR-04 - 01-APR-04

Committees

 CommitteeFunctionFrom / To
Astronomical Science Group of Ireland Spring 2006 meeting UCC Organiser2006 / 2006
Astronomical Science Group of Ireland Autumn 2008 meeting Organizer2008 / 2008

Employment

 EmployerPositionFrom / To
University College Cork Associate Professor in the Department of Physics01-OCT-96 /
Harvard-Smithsonian Center for Astrophysics Hubble Fellow/Post-Doc01-JAN-91 / 01-JAN-95
Oxford University Post-Doc01-JAN-87 / 01-JAN-91

Education

 YearInstituionQualificationSubject
1983NUI Galway BSc
1987NUI Galway/DIAS PhD

Reviews

 JournalRole
Monthly Notices Of The Royal Astronomical Society Referee
The Astrophysical Journal Referee