Ian Cohen Print


  240-228-1637

  Ian.Cohen@jhuapl.edu

: SES

:   Space Physicist

:  Heliophysics, Planetary

  MMS, EIS

 
Degree Field of Study Year Attained Institution Name
Ph.D. Physics 2015 University of New Hampshire
B.A. Astronomy & Physics 2010 Boston University

Dr. Ian J. Cohen is a Senior Professional Staff member at The Johns Hopkins University Applied Physics Laboratory (JHU/APL).  He received his B.A. (with distinction) in Astronomy & Physics from Boston University in 2010. From 2010 to 2015, he attended the University of New Hampshire, where he obtained his Ph.D. (2015) in Physics while working in the Magnetosphere-Ionosphere Research Lab within the UNH Space Science Center. His current research interests focus on experimental space physics, specifically magnetospheric and plasma physics including magnetosphere-iononsphere coupling (including ion outflow, auroral dynamics, and ionospheric feedback); energetic particle dynamics; and plasma and energetic particle instrumentation. He currently serves as Project Scientist for the NASA Magnetospheric Multiscale (MMS) mission Energetic Particle Detector (EPD) investigation and Instrument Scientist for the MMS Energetic Ion Spectrometer (EIS) instruments.

 
AGU Index Category AGU Index Sub-Category
SPACE PLASMA PHYSICS Instruments and techniques
SPACE PLASMA PHYSICS Charged particle motion and acceleration
SPACE WEATHER Magnetic storms
SPACE PLASMA PHYSICS Particle acceleration
:
Start Year End Year Description
2016 Current Senior Professional Staff, JHU/APL
2015 2016 Postdoctoral Fellow, JHU/APL
2015 2015 Postdoctoral Research Assistant, UNH
2010 2015 Graduate Research Assistant, UNH
2010 2015 Observatory Manager, UNH
2007 2010 Planetarium and Observatory Staff, Museum of Science, Boston
2006 2010 Undergraduate Research Assistant, Boston University
Start Year End Year Description
2014 Current Member of Scientist Network, NSF Aurorasaurus Project
2013 Current Member, American Astronomical Society (AAS) Solar Physics Division (SPD) Public Policy Committee
2013 2015 Student Representative, NSF Geospace Environment Modeling (GEM) Steering Committee
Year Description
2013 NASA Student Ambassador
2011-2013 Graduate Student Researchers Program (GSRP) fellowship, NASA Goddard Space Flight Center
:
The following publication information was downloaded from http://www.researcherId.com/rid/K-3038-2015.
Allen, R. C., Livi, S. A., Vines, S. K., Goldstein, J., Cohen, I., Fuselier, S. A., Mauk, B. H., Spence, H. E., (2017), Storm time empirical model of O+ and O6+ distributions in the magnetosphere, Journal of Geophysical Research-Space Physics, 122, 8353-8374

Cohen, Ian J., Mauk, Barry H., Anderson, Brian J., Westlake, Joseph H., Sibeck, David G., Turner, Drew L., Fennell, Joseph F., Blake, J. Bern, Jaynes, Allison N., Leonard, Trevor W., Baker, Daniel N., Spence, Harlan E., Reeves, Geoff D., Giles, Barbara J., Strangeway, Robert J., Torbert, Roy B., Burch, James L., (2017), Statistical analysis of MMS observations of energetic electron escape observed at/beyond the dayside magnetopause, Journal of Geophysical Research-Space Physics, 122, 9440-9463

Cohen, Ian J., Mitchell, Donald G., Kistler, Lynn M., Mauk, Barry H., Anderson, Brian J., Westlake, Joseph H., Ohtani, Shinichi, Hamilton, Douglas C., Turner, Drew L., Blake, J. Bernard, Fennell, Joseph F., Jaynes, Allison N., Leonard, Trevor W., Gerrard, Andrew J., Lanzerotti, Louis J., Allen, Robert C., Burch, James L., (2017), Dominance of high-energy (> 150keV) heavy ion intensities in Earth's middle to outer magnetosphere, Journal of Geophysical Research-Space Physics, 122, 9282-9293

D. L. Turner, J. F. Fennell, J. B. Blake, S. G. Claudepierre, J. H. Clemmons, A. N. Jaynes, T. Leonard, D. N. Baker, I. J. Cohen, M. Gkioulidou, A. Y. Ukhorskiy, B. H. Mauk, C. Gabrielse, V. Angelopoulos, R. J. Strangeway, C. A. Kletzing, O. Le Contel, H. E. Spence, R. B. Torbert, J. L. Burch, G. D. Reeves, (2017), Multipoint observations of energetic particle injections and substorm activity during a conjunction between Magnetospheric Multiscale (MMS) and Van Allen Probes, Journal of Geophysical Research: Space Physics, https://doi.org/10.1002/2017JA024554

F. Catapano, G. Zimbardo, S. Perri, A. Greco, D. Delcourt, A. Retinò, I. J. Cohen, (2017), Charge proportional and weakly mass-dependent acceleration of different ion species in the Earth's magnetotail, Geophysical Research Letters, https://doi.org/10.1002/2017GL075092

Lee, S. H., Sibeck, D. G., Hwang, K. -J., Wang, Y., Silveira, M. V. D., Chu, C., Mauk, B. H., Cohen, I. J., Ho, G. C., Mason, G. M., Gold, R. E., Burch, J. L., Giles, B. L., Torbert, R. B., Russell, C. T., Wei, H., (2017), MMS observation of inverse energy dispersion in shock drift accelerated ions, Journal of Geophysical Research-Space Physics, 122, 3232-3246

Anderson, Brian J., Russell, Christopher T., Strangeway, Robert J., Plaschke, Ferdinand, Magnes, Werner, Fischer, David, Korth, Haje, Merkin, Viacheslav G., Barnes, Robin J., Waters, Colin L., Cohen, Ian J., Westlake, Joseph H., Mauk, Barry H., Leinweber, Hannes K., Gershman, Daniel J., Giles, Barbara L., Le, Guan, Torbert, Roy B., Burch, James L., (2016), Electrodynamic context of magnetopause dynamics observed by magnetospheric multiscale, Geophysical Research Letters, 43, 5988-5996

Baker, D. N., Jaynes, A. N., Turner, D. L., Nakamura, R., Schmid, D., Mauk, B. H., Cohen, I. J., Fennell, J. F., Blake, J. B., Strangeway, R. J., Russell, C. T., Torbert, R. B., Dorelli, J. C., Gershman, D. J., Giles, B. L., Burch, J. L., (2016), A telescopic and microscopic examination of acceleration in the June 2015 geomagnetic storm: Magnetospheric Multiscale and Van Allen Probes study of substorm particle injection, Geophysical Research Letters, 43, 6051-6059

Breuillard, H., Le Contel, O., Retino, A., Chasapis, A., Chust, T., Mirioni, L., Graham, D. B., Wilder, F. D., Cohen, I., Vaivads, A., Khotyaintsev, Yu V., Lindqvist, P. -A., Marklund, G. T., Burch, J. L., Torbert, R. B., Ergun, R. E., Goodrich, K. A., Macri, J., Needell, J., Chutter, M., Rau, D., Dors, I., Russell, C. T., Magnes, W., Strangeway, R. J., Bromund, K. R., Plaschke, F., Fischer, D., Leinweber, H. K., Anderson, B. J., Le, G., Slavin, J. A., Kepko, E. L., Baumjohann, W., Mauk, B., Fuselier, S. A., Nakamura, R., (2016), Multispacecraft analysis of dipolarization fronts and associated whistler wave emissions using MMS data, Geophysical Research Letters, 43, 7279-7286

Burch, J. L., Torbert, R. B., Phan, T. D., Chen, L. -J., Moore, T. E., Ergun, R. E., Eastwood, J. P., Gershman, D. J., Cassak, P. A., Argall, M. R., Wang, S., Hesse, M., Pollock, C. J., Giles, B. L., Nakamura, R., Mauk, B. H., Fuselier, S. A., Russell, C. T., Strangeway, R. J., Drake, J. F., Shay, M. A., Khotyaintsev, Yu. V., Lindqvist, P. -A., Marklund, G., Wilder, F. D., Young, D. T., Torkar, K., Goldstein, J., Dorelli, J. C., Avanov, L. A., Oka, M., Baker, D. N., Jaynes, A. N., Goodrich, K. A., Cohen, I. J., Turner, D. L., Fennell, J. F., Blake, J. B., Clemmons, J., Goldman, M., Newman, D., Petrinec, S. M., Trattner, K. J., Lavraud, B., Reiff, P. H., Baumjohann, W., Magnes, W., Steller, M., Lewis, W., Saito, Y., Coffey, V., Chandler, M., (2016), Electron-scale measurements of magnetic reconnection in space, Science, 352, 1189-+

Clark, G., Cohen, I., Westlake, J. H., Andrews, G. B., Brandt, P., Gold, R. E., Gkioulidou, M. A., Hacala, R., Haggerty, D., Hill, M. E., Ho, G. C., Jaskulek, S. E., Kollmann, P., Mauk, B. H., McNutt, R. L., Jr., Mitchell, D. G., Nelson, K. S., Paranicas, C., Paschalidis, N., Schlemm, C. E., (2016), The "Puck" energetic charged particle detector: Design, heritage, and advancements, Journal of Geophysical Research-Space Physics, 121, 7900-7913

Cohen, I. J., Mauk, B. H., Anderson, B. J., Westlake, J. H., Sibeck, D. G., Giles, B. L., Pollock, C. J., Turner, D. L., Fennell, J. F., Blake, J. B., Clemmons, J. H., Jaynes, A. N., Baker, D. N., Craft, J. V., Spence, H. E., Niehof, J. T., Reeves, G. D., Torbert, R. B., Russell, C. T., Strangeway, R. J., Magnes, W., Trattner, K. J., Fuselier, S. A., Burch, J. L., (2016), Observations of energetic particle escape at themagnetopause: Early results from the MMS Energetic Ion Spectrometer (EIS), Geophysical Research Letters, 43, 5960-5968

Cohen, I. J., Widholm, M., Lessard, M. R., Riley, P., Heavisides, J., Moen, J. I., Clausen, L. B. N., Bekkeng, T. A., (2016), Rocket-borne measurements of electron temperature and density with the Electron Retarding Potential Analyzer instrument, Journal of Geophysical Research-Space Physics, 121, 6774-6782

Fennell, J. F., Turner, D. L., Lemon, C. L., Blake, J. B., Clemmons, J. H., Mauk, B. H., Jaynes, A. N., Cohen, I. J., Westlake, J. H., Baker, D. N., Craft, J. V., Spence, H. E., Reeves, G. D., Torbert, R. B., Burch, J. L., Giles, B. L., Paterson, W. R., Strangeway, R. J., (2016), Microinjections observed by MMS FEEPS in the dusk to midnight region, Geophysical Research Letters, 43, 6078-6086

Fernandes, P. A., Lynch, K. A., Zettergren, M., Hampton, D. L., Bekkeng, T. A., Cohen, I. J., Conde, M., Fisher, L. E., Horak, P., Lessard, M. R., Miceli, R. J., Michell, R. G., Moen, J., Powell, S. P., (2016), Measuring the seeds of ion outflow: Auroral sounding rocket observations of low-altitude ion heating and circulation, Journal of Geophysical Research-Space Physics, 121, 1587-1607

Hwang, K. -J., Sibeck, D. G., Giles, B. L., Pollock, C. J., Gershman, D., Avanov, L., Paterson, W. R., Dorelli, J. C., Ergun, R. E., Russell, C. T., Strangeway, R. J., Mauk, B., Cohen, I. J., Torbert, R. B., Burch, J. L., (2016), The substructure of a flux transfer event observed by the MMS spacecraft, Geophysical Research Letters, 43, 9434-9443

Jaynes, A. N., Turner, D. L., Wilder, F. D., Osmane, A., Baker, D. N., Blake, J. B., Fennell, J. F., Cohen, I. J., Mauk, B. H., Reeves, G. D., Ergun, R. E., Giles, B. L., Gershman, D. J., Torbert, R. B., Burch, J. L., (2016), Energetic electron acceleration observed by MMS in the vicinity of an X-line crossing, Geophysical Research Letters, 43, 7356-7363

Lavraud, B., Zhang, Y. C., Vernisse, Y., Gershman, D. J., Dorelli, J., Cassak, P. A., Dargent, J., Pollock, C., Giles, B., Aunai, N., Argall, M., Avanov, L., Barrie, A., Burch, J., Chandler, M., Chen, L. -J., Clark, G., Cohen, I., Coffey, V., Eastwood, J. P., Egedal, J., Eriksson, S., Ergun, R., Farrugia, C. J., Fuselier, S. A., Genot, V., Graham, D., Grigorenko, E., Hasegawa, H., Jacquey, C., Kacem, I., Khotyaintsev, Y., MacDonald, E., Magnes, W., Marchaudon, A., Mauk, B., Moore, T. E., Mukai, T., Nakamura, R., Paterson, W., Penou, E., Phan, T. D., Rager, A., Retino, A., Rong, Z. J., Russell, C. T., Saito, Y., Sauvaud, J. -A., Schwartz, S. J., Shen, C., Smith, S., Strangeway, R., Toledo-Redondo, S., Torbert, R., Turner, D. L., Wang, S., Yokota, S., (2016), Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause, Geophysical Research Letters, 43, 3042-3050

Lee, S. H., Sibeck, D. G., Hwang, K. -J., Wang, Y., Silveira, M. V. D., Fok, M. -C., Mauk, B. H., Cohen, I. J., Ruohoniemi, J. M., Kitamura, N., Burch, J. L., Giles, B. L., Torbert, R. B., Russell, C. T., Lester, M., (2016), Inverse energy dispersion of energetic ions observed in the magnetosheath, Geophysical Research Letters, 43, 7338-7347

Matsui, H., Erickson, P. J., Foster, J. C., Torbert, R. B., Argall, M. R., Anderson, B. J., Blake, J. B., Cohen, I. J., Ergun, R. E., Farrugia, C. J., Khotyaintsev, Yu. V., Korth, H., Lindqvist, P. -A., Magnes, W., Marklund, G. T., Mauk, B. H., Paulson, K. W., Russell, C. T., Strangeway, R. J., Turner, D. L., (2016), Dipolarization in the inner magnetosphere during a geomagnetic storm on 7 October 2015, Geophysical Research Letters, 43, 9397-9405

Mauk, Barry H., Cohen, Ian J., Westlake, Joseph H., Anderson, Brian J., (2016), Modeling magnetospheric energetic particle escape across Earth's magnetopause as observed by the MMS mission, Geophysical Research Letters, 2016GL068856, http://dx.doi.org/10.1002/2016GL068856

Nakamura, R., Sergeev, V. A., Baumjohann, W., Plaschke, F., Magnes, W., Fischer, D., Varsani, A., Schmid, D., Nakamura, T. K. M., Russell, C. T., Strangeway, R. J., Leinweber, H. K., Le, G., Bromund, K. R., Pollock, C. J., Giles, B. L., Dorelli, J. C., Gershman, D. J., Paterson, W., Avanov, L. A., Fuselier, S. A., Genestreti, K., Burch, J. L., Torbert, R. B., Chutter, M., Argall, M. R., Anderson, B. J., Lindqvist, P. -A., Marklund, G. T., Khotyaintsev, Y. V., Mauk, B. H., Cohen, I. J., Baker, D. N., Jaynes, A. N., Ergun, R. E., Singer, H. J., Slavin, J. A., Kepko, E. L., Moore, T. E., Lavraud, B., Coffey, V., Saito, Y., (2016), Transient, small-scale field-aligned currents in the plasma sheet boundary layer during storm time substorms, Geophysical Research Letters, 43, 4841-4849

Turner, D. L., Fennell, J. F., Blake, J. B., Clemmons, J. H., Mauk, B. H., Cohen, I. J., Jaynes, A. N., Craft, J. V., Wilder, F. D., Baker, D. N., Reeves, G. D., Gershman, D. J., Avanov, L. A., Dorelli, J. C., Giles, B. L., Pollock, C. J., Schmid, D., Nakamura, R., Strangeway, R. J., Russell, C. T., Artemyev, A. V., Runov, A., Angelopoulos, V., Spence, H. E., Torbert, R. B., Burch, J. L., (2016), Energy limits of electron acceleration in the plasma sheet during substorms: A case study with the Magnetospheric Multiscale (MMS) mission, Geophysical Research Letters, 43, 7785-7794

Westlake, J. H., Cohen, I. J., Mauk, B. H., Anderson, B. J., Mitchell, D. G., Gkioulidou, M., Walsh, B. M., Lanzerotti, L. J., Strangeway, R. J., Russell, C. T., (2016), The permeability of the magnetopause to a multispecies substorm injection of energetic particles, Geophysical Research Letters, 43, 9453-9460

Cohen, I. J., Lessard, M. R., Varney, R. H., Oksavik, K., Zettergren, M., Lynch, K. A., (2015), Ion upflow dependence on ionospheric density and solar photoionization, Journal of Geophysical Research-Space Physics, 120, 10039-10052

Cohen, I. J., Lessard, M. R., Kaeppler, S. R., Bounds, S. R., Kletzing, C. A., Streltsov, A. V., LaBelle, J. W., Dombrowski, M. P., Jones, S. L., Pfaff, R. F., Rowland, D. E., Anderson, B. J., Korth, H., Gjerloev, J. W., (2013), Auroral Current and Electrodynamics Structure (ACES) observations of ionospheric feedback in the Alfven resonator and model responses, Journal of Geophysical Research-Space Physics, 118, 3288-3296

Cohen, I. J., Clarke, J. T., (2011), Modeling of Jupiter's auroral curtain and upper atmospheric thermal structure, Journal of Geophysical Research-Space Physics, 116