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51

An architecture for active metamaterial particles and experimental validation at RF

Bogdan-Ioan Popa, Steven A. Cummer

Journal:

Microwave and Optical Technology Letters

Year:

2007

Language:

english

File:

PDF, 263 KB

english, 2007

52

Global X-ray emission during an isolated substorm — a case study

N. Østgaard, J. Stadsnes, J. Bjordal, R.R. Vondrak, S.A. Cummer, D.L. Chenette, M. Schulz, G.K. Parks, M.J. Brittnacher, D.L. McKenzie, J.G. Pronko

Journal:

Journal of Atmospheric and Solar-Terrestrial Physics

Year:

2000

Language:

english

File:

PDF, 822 KB

english, 2000

53

Current moment in sprite-producing lightning

Steven A Cummer

Journal:

Journal of Atmospheric and Solar-Terrestrial Physics

Year:

2003

Language:

english

File:

PDF, 214 KB

english, 2003

54

Ground-based detection of sprites and their parent lightning flashes over Africa during the 2006 AMMA campaign

E. R. Williams, W. A. Lyons, Y. Hobara, V. C. Mushtak, N. Asencio, R. Boldi, J. Bór, S. A. Cummer, E. Greenberg, M. Hayakawa, R. H. Holzworth, V. Kotroni, J. Li, C. Morales, T. E. Nelson, C. Price, B.

Journal:

Quarterly Journal of the Royal Meteorological Society

Year:

2010

Language:

english

File:

PDF, 751 KB

english, 2010

55

Quantification of the troposphere-to-ionosphere charge transfer in a gigantic jet

Cummer, Steven A., Li, Jingbo, Han, Feng, Lu, Gaopeng, Jaugey, Nicolas, Lyons, Walter A., Nelson, Thomas E.

Journal:

Nature Geoscience

Year:

2009

Language:

english

File:

PDF, 1.36 MB

english, 2009

56

Nonreciprocal active metamaterials

Popa, Bogdan-Ioan, Cummer, Steven

Journal:

Physical Review B

Year:

2012

Language:

english

File:

PDF, 404 KB

english, 2012

57

Multi-instrumental observations of a positive gigantic jet produced by a winter thunderstorm in Europe

Oscar A. van der Velde, József Bór, Jingbo Li, Steven A. Cummer, Enrico Arnone, Ferruccio Zanotti, Martin Füllekrug, Christos Haldoupis, Samir NaitAmor, Thomas Farges

Year:

2010

Language:

english

File:

PDF, 5.08 MB

english, 2010

58

Dual-band planar electric metamaterial in the terahertz regime

Yuan, Yu, Bingham, Christopher, Tyler, Talmage, Palit, Sabarni, Hand, Thomas H., Padilla, Willie J., Smith, David R., Jokerst, Nan Marie, Cummer, Steven A.

Journal:

Year:

2008

Language:

english

File:

PDF, 875 KB

english, 2008

59

Optical source transformations

Kundtz, N., Roberts, D. A., Allen, J., Cummer, S., Smith, D. R.

Journal:

Year:

2008

Language:

english

File:

PDF, 1.53 MB

english, 2008

60

Fast tomographic reconstruction strategy for diffuse optical tomography

Zhai, Yuhu, Cummer, Steven A.

Journal:

Year:

2009

Language:

english

File:

PDF, 986 KB

english, 2009

61

Zero loss magnetic metamaterials using powered active unit cells

Yuan, Yu, Popa, Bogdan-Ioan, Cummer, Steven A.

Journal:

Year:

2009

Language:

english

File:

PDF, 660 KB

english, 2009

62

[IEEE 2011 XXXth URSI General Assembly and Scientific Symposium - Istanbul (2011.08.13-2011.08.20)] 2011 XXXth URSI General Assembly and Scientific Symposium - Powered and active RF metamaterials

Cummer, S. A., Popa, B., Katko, A.

Year:

2011

Language:

english

File:

PDF, 153 KB

english, 2011

63

Reconfigurable Reflectarray Using Addressable Metamaterials

Hand, T.H., Cummer, S.A.

Journal:

IEEE Antennas and Wireless Propagation Letters

Year:

2010

Language:

english

File:

PDF, 541 KB

english, 2010

64

Estimation of electric charge in sprites from optical and radio observations

Li, Jingbo, Cummer, Steven

Journal:

Journal of Geophysical Research

Year:

2011

Language:

english

File:

PDF, 1.32 MB

english, 2011

65

A test of magnetospheric radio tomographic imaging with IMAGE and WIND

Cummer, S. A., Reiner, M. J., Reinisch, B. W., Kaiser, M. L., Green, J. L., Benson, R. F., Manning, R., Goetz, K.

Journal:

Geophysical Research Letters

Year:

2001

Language:

english

File:

PDF, 476 KB

english, 2001

66

Ionospheric E region remote sensing with ELF radio atmospherics

Cummer, Steven A., Inan, Umran S.

Journal:

Year:

2000

Language:

english

File:

PDF, 735 KB

english, 2000

67

Auroral electron distributions derived from combined UV and X-ray emissions

Østgaard, N., Stadsnes, J., Bjordal, J., Germany, G. A., Vondrak, R. R., Parks, G. K., Cummer, S. A., Chenette, D. L., Pronko, J. G.

Journal:

Journal of Geophysical Research

Year:

2001

Language:

english

File:

PDF, 994 KB

english, 2001

68

Rare measurements of a sprite with halo event driven by a negative lightning discharge over Argentina

Taylor, M. J., Bailey, M. A., Pautet, P. D., Cummer, S. A., Jaugey, N., Thomas, J. N., Solorzano, N. N., Sao Sabbas, F., Holzworth, R. H., Pinto, O., Schuch, N. J.

Journal:

Geophysical Research Letters

Year:

2008

Language:

english

File:

PDF, 210 KB

english, 2008

69

Spectral dependence of terrestrial gamma-ray flashes on source distance

Hazelton, B. J., Grefenstette, B. W., Smith, D. M., Dwyer, J. R., Shao, X.-M., Cummer, S. A., Chronis, T., Lay, E. H., Holzworth, R. H.

Journal:

Geophysical Research Letters

Year:

2009

Language:

english

File:

PDF, 117 KB

english, 2009

70

Discharge processes, electric field, and electron energy in ISUAL‐recorded gigantic jets

Kuo, Cheng‐Ling, Chou, J. K., Tsai, L. Y., Chen, A. B., Su, H. T., Hsu, R. R., Cummer, S. A., Frey, H. U., Mende, S. B., Takahashi, Y., Lee, L. C.

Journal:

Journal of Geophysical Research

Year:

2009

Language:

english

File:

PDF, 455 KB

english, 2009

71

Coordinated analysis of delayed sprites with high-speed images and remote electromagnetic fields

Li, J., Cummer, S. A., Lyons, W. A., Nelson, T. E.

Journal:

Journal of Geophysical Research

Year:

2008

Language:

english

File:

PDF, 1.54 MB

english, 2008

72

Simultaneous remote electric and magnetic field measurements of lightning continuing currents

Ross, Manus, Cummer, Steven A., Nielsen, Thomas K., Zhang, Yongming

Journal:

Journal of Geophysical Research

Year:

2008

Language:

english

File:

PDF, 359 KB

english, 2008

73

VLF signatures of ionospheric heating by HIPAS

Bell, T. F., Inan, U. S., Danielson, M. T., Cummer, S. A.

Journal:

Year:

1995

Language:

english

File:

PDF, 1.04 MB

english, 1995

74

VLF remote sensing of high-energy auroral particle precipitation

Cummer, S. A., Bell, T. F., Inan, U. S., Chenette, D. L.

Journal:

Journal of Geophysical Research

Year:

1997

Language:

english

File:

PDF, 1.14 MB

english, 1997

75

Oxidant Enhancement in Martian Dust Devils and Storms: Implications for Life and Habitability

Atreya, Sushil K., Wong, Ah-San, Renno, Nilton O., Farrell, William M., Delory, Gregory T., Sentman, Davis D., Cummer, Steven A., Marshall, John R., Rafkin, Scot C.R., Catling, David C.

Journal:

Year:

2006

Language:

english

File:

PDF, 1.52 MB

english, 2006

76

Characterization of Tunable Metamaterial Elements Using MEMS Switches

Hand, Thomas, Cummer, Steven

Journal:

IEEE Antennas and Wireless Propagation Letters

Year:

2007

Language:

english

File:

PDF, 664 KB

english, 2007

77

Oxidant Enhancement in Martian Dust Devils and Storms: Storm Electric Fields and Electron Dissociative Attachment

Delory, Gregory T., Farrell, William M., Atreya, Sushil K., Renno, Nilton O., Wong, Ah-San, Cummer, Steven A., Sentman, Davis D., Marshall, John R., Rafkin, Scot C.R., Catling, David C.

Journal:

Year:

2006

Language:

english

File:

PDF, 1.50 MB

english, 2006

78

Radio atmospheric propagation on Mars and potential remote sensing applications

Cummer, Steven A., Farrell, William M.

Journal:

Journal of Geophysical Research

Year:

1999

Language:

english

File:

PDF, 952 KB

english, 1999

79

Global multispectral auroral imaging of an isolated substorm

Cummer, S. A., Vondrak, R. R., Østgaard, N., Stadsnes, J., Bjordal, J., Chenette, D. L., Brittnacher, M. J., Parks, G. K., Sigwarth, J. B., Frank, L. A.

Journal:

Geophysical Research Letters

Year:

2000

Language:

english

File:

PDF, 652 KB

english, 2000

80

Submillisecond resolution lightning currents and sprite development: Observations and implications

Cummer, Steven A., Stanley, Mark

Journal:

Geophysical Research Letters

Year:

1999

Language:

english

File:

PDF, 616 KB

english, 1999

81

Sprites triggered by negative lightning discharges

Barrington-Leigh, C. P., Inan, U. S., Stanley, M., Cummer, S. A.

Journal:

Geophysical Research Letters

Year:

1999

Language:

english

File:

PDF, 617 KB

english, 1999

82

Detection of daytime sprites via a unique sprite ELF signature

Stanley, Mark, Brook, Marx, Krehbiel, Paul, Cummer, Steven A.

Journal:

Geophysical Research Letters

Year:

2000

Language:

english

File:

PDF, 530 KB

english, 2000

83

Cause of the localized maximum of X-ray emission in the morning sector: A comparison with electron measurements

Østgaard, N., Stadsnes, J., Bjordal, J., Vondrak, R. R., Cummer, S. A., Chenette, D. L., Schulz, M., Pronko, J. G.

Journal:

Journal of Geophysical Research

Year:

2000

Language:

english

File:

PDF, 1.84 MB

english, 2000

84

Global-scale electron precipitation features seen in UV and X rays during substorms

Østgaard, N., Stadsnes, J., Bjordal, J., Vondrak, R. R., Cummer, S. A., Chenette, D. L., Parks, G. K., Brittnacher, M. J., McKenzie, D. L.

Journal:

Journal of Geophysical Research

Year:

1999

Language:

english

File:

PDF, 1.90 MB

english, 1999

85

Modeling ELF radio atmospheric propagation and extracting lightning currents from ELF observations

Cummer, Steven A., Inan, Umran S.

Journal:

Year:

2000

Language:

english

File:

PDF, 971 KB

english, 2000

86

Unusually intense continuing current in lightning produces delayed mesospheric breakdown

Cummer, Steven A., Füllekrug, Martin

Journal:

Geophysical Research Letters

Year:

2001

Language:

english

File:

PDF, 548 KB

english, 2001

87

Lightning charge moment changes in U.S. High Plains thunderstorms

Cummer, Steven A., Lyons, Walter A.

Journal:

Geophysical Research Letters

Year:

2004

Language:

english

File:

PDF, 649 KB

english, 2004

88

Implications of lightning charge moment changes for sprite initiation

Cummer, Steven A.

Journal:

Journal of Geophysical Research

Year:

2005

Language:

english

File:

PDF, 537 KB

english, 2005

89

A flexible and robust direct reconstruction method for magnetospheric radio tomography

Zhai, Yuhu, Cummer, Steven A.

Journal:

Year:

2005

Language:

english

File:

PDF, 617 KB

english, 2005

90

Submillisecond imaging of sprite development and structure

Cummer, Steven A., Jaugey, Nicolas, Li, Jingbo, Lyons, Walter A., Nelson, Thomas E., Gerken, Elizabeth A.

Journal:

Geophysical Research Letters

Year:

2006

Language:

english

File:

PDF, 302 KB

english, 2006

91

An orthogonal projection and regularization technique for magnetospheric radio tomography

Zhai, Yuhu, Cummer, Steven A.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 445 KB

english, 2006

92

Nighttime D region electron density profiles and variabilities inferred from broadband measurements using VLF radio emissions from lightning

Cheng, Zhenggang, Cummer, Steven A., Baker, Daniel N., Kanekal, Shrikanth G.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 829 KB

english, 2006

93

Application of an orbital radar sounder model to detecting Martian polar subsurface features

Xu, Yanbin, Cummer, Steven A., Farrell, William M.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 580 KB

english, 2006

94

Quasi-electrostatic field analysis and simulation of Martian and terrestrial dust devils

Zhai, Y., Cummer, S. A., Farrell, W. M.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 686 KB

english, 2006

95

Integration of electrostatic and fluid dynamics within a dust devil

Farrell, W. M., Renno, N., Delory, G. T., Cummer, S. A., Marshall, J. R.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 315 KB

english, 2006

96

Simultaneous radio and satellite optical measurements of high-altitude sprite current and lightning continuing current

Cummer, Steven A., Frey, Harald U., Mende, Stephen B., Hsu, Rue-Ron, Su, Han-Tzong, Chen, Alfred B., Fukunishi, Hiroshi, Takahashi, Yukihiro

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 407 KB

english, 2006

97

Broadband very low frequency measurement of D region ionospheric perturbations caused by lightning electromagnetic pulses

Cheng, Zhenggang, Cummer, Steven A., Su, Han-Tzong, Hsu, Rue-Ron

Journal:

Journal of Geophysical Research

Year:

2007

Language:

english

File:

PDF, 594 KB

english, 2007

98

Testing sprite initiation theory using lightning measurements and modeled electromagnetic fields

Hu, W., Cummer, S. A., Lyons, W. A.

Journal:

Journal of Geophysical Research

Year:

2007

Language:

english

File:

PDF, 602 KB

english, 2007

99

A model of the ULF magnetic and electric field generated from a dust devil

Farrell, W. M., Marshall, J. R., Cummer, S. A., Delory, G. T., Desch, M. D.

Journal:

Journal of Geophysical Research

Year:

2006

Language:

english

File:

PDF, 3.09 MB

english, 2006

100

Halos generated by negative cloud-to-ground lightning

Frey, H. U., Mende, S. B., Cummer, S. A., Li, J., Adachi, T., Fukunishi, H., Takahashi, Y., Chen, A. B., Hsu, R.-R., Su, H.-T., Chang, Y.-S.

Journal:

Geophysical Research Letters

Year:

2007

Language:

english

File:

PDF, 201 KB

english, 2007