Societies, Citations & Scientific Papers

Howard Garcia, PhD
Astronomy and Astrophysics,
Georgetown University, Washington

Field of enquiry from 1960:
(see selected publications)

• Celestial mechanics [1]
• Reconnaissance and mapping from space [2]
• Spacecraft navigation [3],[4],[5],[8]
• Magnetospheric physics [6],[7],[28]
• Solar and flare physics [9],[10],[11],[12], [13],[14],[15],[16],[17],[18],[19],[20],[21],[23] [24],[25],[26],[27],[31],[34],[35],[36],[39]
• Space weather forecasting (energetic protons) [22], [29],[30],[32],[33],[37],[38]

Employment from 1952:

• U.S. Coast & Geodetic Survey officer corps (now NOAA corps)
• Raytheon company, Autometric Operation
• Martin Marietta Corp, Denver Aerospace Divison
• Space Environment Center, NOAA (see link)

Professional Societies:

• American Astronomical Society
• American Geophysical Union
• International Astronomical Union

Citations:

• Author of the Year (Denver Division), 1976, Martin Marietta Aerospace
• Engineer of the Year (Corporationwide), 1976, Martin Marietta Aerospace (shared with William J. Owen) for the conception and preliminary design of an autonomous, high-altitude spacecraft navigation system.

Selected Publications: (with links where available)

• [1] Garcia, H.A., 'The mass and figure of Saturn by photographic astrometry of its satellites', Astro. J.,Vol. 77, No.8, October 1972 http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1972AJ.....77..684G&classic=YES
• [2] Garcia, H.A., 'The calibration of wide angle cameras and systems of interlocked cameras by means of tracked stellar photography', Photographic Science and Engineering, Vol. 14, No.4, 229, 236, July August, 1970
• [3] Garcia, H.A., 'An analysis of recent advances in autonomous navigation for near-Earth applications', AIAA Guidance and Control Conference, Paper No.73-875, Key Biscanyne, FL, 1973
• [4] Garcia, H.A., 'Design and analysis of a Space Sextant for high altitude navigation', Journal of Spacecraft and Rockets, Vol.13, No.12, 705-711, 1976
• [5] Garcia, H.A., 'Geometric aspects of solar disruptions in satellite communication', IEEE Transactions on Broadcasting,BC-30(2),1984.
• [6] Garcia, H.A., and Spjeldvik,W.N., 'Anisotropy characteristics of geomagnetically trapped ions', JGR 90(A1),347-358,1985.
• [7] Garcia, H.A., 'GOES x-ray sensor inflight relative calibration', NOAA Technical Memorandum ERL SEL-72,1985.
• [8] Garcia, H.A., 1986 satellite EIRP chart, Communications Engineering and Design Magazine (October),1985.
• [9] Garcia, H.A.,'Flare plasma density determination using observed temperature profiles', Proceedings of the National Solar Observatory/ Solar Maximum Mission, D.F. Neidig, ed.,(February),1986.
• [10] Garcia, H.A., 'An analysis of flare properties by observed temperature and emission measure profiles', Adv. Space Res. 6(6),241-244,1986. doi:10.1016/0273-1177(86)90152-3
• [11] Garcia, H.A., and Dryer,M.,'The solar flares of February 1986 and the ensuing intense geomagnetic storm', Solar Phys. 109:119-137,1987. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1987SoPh..109..119G&classic=YES
• [12] Garcia, H.A., 'The empirical relation of peak emission measure and temperature to peak X-ray flux during cycle 21', Adv. Space Res. 8(11), 157-160,1988. doi:10.1016/0273-1177(88)90312-2
• [13] Garcia, H.A., 'Energy storage mechanisms in the gradual phase of solar flares', Proceedings: Solar System Plasma Physics, Geophysical Monograph 54, J.L. Burch and S.H. Waite (eds.), American Geophysical Union,1989.
• [14] Osherovich, V.A., and Garcia,H.A., 'The relationship of sunspot magnetic fields to umbral sizes by return-flux theory', Astrophy.J., 336,468-474,1989. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1989ApJ...336..468&classic=YES
• [15] Osherovich, V.A. and Garcia, H.A., 'Electric current in a unipolar sunspot with an untwisted field', Geophysical Research Letters,17(12),2273-2276,1990.
• [16] Garcia, H.A., 'Evidence for solar-cycle evolution of north-south flare asymmetry during cycles 20 and 21', Solar Phys.,127,185-197,1990. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1990SoPh..127..185G&classic=YES
• [17] Garcia, H.A., and Farnik,F., 'Stereoscopic measurements of flares from PHOBOS and GOES', Solar Phys.131,137-148,1991. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1991SoPh..131..137G&classic=YES
• [18] Garcia, H.A. and Farnik,F., 'Flare plasma diagnostics based on the soft X-rays from GOES and PROGNOZ', Solar Phys.,141,127,1992. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1992SoPh..141..127G&classic=YES
• [19] Garcia, H. A., and McIntosh,P., 'High temperature flares observed in broadband soft X-rays', Solar Phys.,141,109,1992. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1992SoPh..141..109G&classic=YES
• [20] Slywester,J., Garcia,H.A., Sylwester,B., Serio,S., and Reale,F., 'Estimation of equivalent flare loop geometry based on broad-band X-rays', Adv.Space Res., 13(9),307-310,1993. doi:10.1016/0273-1177(93)90496-X
• [21] Farnik,F. and Garcia,H.A.,'Temperature analysis of solar flares based on PHOBOS-GOES stereoscopic observation's, Adv. Space Res., 13(9),299,1993. doi:10.1016/0273-1177(doi:10.1016/0273-1177(93)90494-V
• [22] Garcia,H.A.,'Temperature and hard X-ray signatures for energetic proton events', Astrophys. J.,420,422,1994. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1994ApJ...420..422G&classic=YES
• [23] Garcia, H. A.,'Temperature and Emission Measure from GOES Soft X-ray Measurements', Solar Phys.,154,275-308,1994. http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1994SoPh..154..275G&classic
• [24] Sylwester,J., Garcia,H.A. and Sylwester,B.,'Quantitative Interpretation of GOES Soft X-ray Measurements'; Astron. and Astrophys., 293,577-585,1994 http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1995A&A...293..577S&classic=YES
• [25] Farnik,F. and Garcia,H.A.,' PHOBOS-GOES Soft X-ray Observations of the Sun', Astrophysical J.,444,929-935,1995 http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1995ApJ...444..929F&classic=YES
• [26] Brown,J.C.,F.Farnik, Garcia,H.A. and Henoux,J.,'Energy release in solar flares',Solar Phys.153,19-31,1994 http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1994SoPh..153..19B&classic
• [27] Garcia,H.A. and McIntosh,P.,'High temperature flares the solar limb and large scale heliographic structure',Proceedings 4th SOHO Workshop on Helioseismology, ESA Pub. SP-376, Vol 2,119,1995
• [28] Garcia,H.A.,'Energetic electron pitch angle distribution parameters at 6.6 Re as deduced from GOES X-ray observations', Planet. Space Sci., Vol 44,No.5, 473-484,1996
• [29] Garcia,H.A. and Kiplinger,A.L.,'Low-temperature soft X-ray flares, spectrally hardening hard X-ray flares and energetic inperplanetary protons', Solar Drivers of Interplanetary and Terrestrial Disturbances, ASP Conference Series, K.S. Balasubramanian, S.L.Keil, R.N.Smartt, Eds, Vol 95,91,1996
• [30] Farnik, F. and Garcia, H.A.,'Solar broad-band hard X-ray spectrometer onboard the Multispectral Thermal Imager satellite', Proceedings of 'A Crossroads for European Solar & Heliospheric Physics', ESA SP-417,1998
• [31] Garcia, H.A.,'Reconstructing the thermal and spatial form of a solar flare from scaling laws and soft X-ray measurements', Astrophys.J.,504, 1051-1066,1998 http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v504n2/37349/sc0.html
• [32] Garcia, H.A., Farnik F. and Kiplinger, A.L.,'Hard X-ray spectroscopy for proton flare prediction', SPIE Conference on Missions to the Sun, San Diego, CA, SPIE Vol.3442,210,1998
• [33] Garcia, H.A., Viereck, R. and Greer, S,'Predicting solar energetic particle events from flare temperatures', Proc. 9th European Meeting on Solar Physics,'Magnetic Fields and Solar Processes', Florence, Italy, Sept. 1999, (ESA SSP-448, Dec.1999)
• [34] Garcia,H.A. and Farnik, F.,'Quantifying the empirical relationship between loop length and the duration of solar flares', High Energy Solar Physics: Anticipating HESSI, ASP Conf. Ser., Vol 206, R. Ramaty and N. Mandzhavidze, Eds., 2000 ISBN: 1-58381-032-3
• [35] Garcia,H.A.,'Thermal-spatial analysis of medium and large solar flares, 1976 to 1996', Astrophys. J. Suppl. Ser., 127: 189-210, 2000 http://www.journals.uchicago.edu/ApJ/journal/issues/ApJS/v127n1/40162/40162.html
• [36] Garcia,H.A.,'Polytropic indices of solar flares', Astrophys.J., 557:897-905, 2001 http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v557n2/53495/53495.html
• [37] Garcia,H.A.,'Forecasting methods for occurrence and magnitude of proton storms with soft X-rays', Spaceweather, Vol 2, S02002,2004 http://www.agu.org/pubs/crossref/2004.../2003SW000001.shtml
• [38] Garcia,H.A.,'Forecasting methods for occurrence and magnitude of proton storms with hard X-rays', Spaceweather, Vol 2, S06003,2004 http://www.agu.org/pubs/crossref/2004.../2003SW000035.shtml
• [39] Woods, T.N.,et al.,'Solar extreme ultraviolet and X-ray irradiance variations', Solar Variability and ite Effect on Climate,Geophysical Monograph 141, AGU, 2004 http://www.agu.org/journals/sw/sw0310/2003SW000010/index.html