Observatory for Heteroscale Magnetosphere-Ionosphere Coupling

The Observatory for Heteroscale Magnetosphere-Ionosphere Coupling (OHMIC) is a mission concept proposed in 2011 to NASA's Explorers program consisting of a pair of spacecraft flying in formation studying the energy powering space weather. The Principal Investigator for the mission is James Burch of the Southwest Research Institute in San Antonio, Texas.[1] The concept was not selected for development at that time.

The mission proposed to investigate how magnetospheric electromagnetic energy flows downward to power aurorae, and study how ion outflows are initiated and modify the underlying ionosphere.[2] Specifically, it would "investigate the coupling of Earth's magnetosphere and ionosphere focusing on the conversion of electromagnetic energy into particle energy in auroral acceleration regions."[3] To this end, the two spacecraft would measure electron distributions, ion distributions, and vector electric and magnetic fields for determining how charged-particle acceleration and injection vary in time and space.[3]

## References

1. ↑ NASA - NASA Selects Science Investigations For Concept Studies.
2. ↑ Utility of NASA’s Heliophysics Research Fleet for Space Weather Prediction. (PDF). Barbara Giles, NASA. The 2012 Space Weather Workshop, April 25, 2012; page 11.
3. ↑ 3.0 3.1 The OHMIC Mission. Ergun, R.; Burch, J. L.; Lotko, W.; Frey, H. U.; Chaston, C. C. American Geophysical Union, Fall Meeting 2013, abstract id.SM52A-07. December 2013.

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Explorers Program

List of Explorers Program missions

Missions|

| 1958–1992|

* Explorer 1
* 2†
* 3
* 4
* 5†
* S-1†
* 6 (S-2)
* 7 (S-1A)
* S-46A†
* 8
* S-56†
* 9 (S-56A)
* S-45†
* 10
* 11 (S-15)
* S-45A†
* S-55†
* 12 (EPE-A)
* 13 (S-55A)
* 14 (EPE-B)
* 15 (EPE-C)
* 16 (S-55B)
* 17 (AE-A)
* 18 (IMP-A)
* 19 (AD-A)
* S-66A (BE-A)†
* 20 (IE-A)
* 21 (IMP-B)
* 22 (BE-B)
* 23 (S-55C)
* 24 (AD-B)
* 25 (Injun 4, IE-B)
* 26 (EPE-D)
* 27 (BE-C)
* 28 (IMP-C)
* 29 (GEOS-A)
* 30 (Solrad 8)
* 31 (DME-A)
* 32 (AE-B)
* 33 (IMP-D)
* 34 (IMP-F)
* 35 (IMP-E)
* 36 (GEOS-B)
* 37 (Solrad 9)
* 38 (RAE-A)
* 39 (AD-C)
* 40 (Injun 5)
* 41 (IMP-G)
* 42 (Uhuru, SAS-A)
* 43 (IMP-H)
* 44 (Solrad 10)
* 45 (SSS-A)
* 46 (MTS)
* 47 (IMP-I)
* 48 (SAS-B)
* 49 (RAE-B)
* 50 (IMP-J)
* 51 (AE-C)
* 52 (Hawkeye 1)
* 53 (SAS-C)
* 54 (AE-D)
* 55 (AE-E)
* DADE-A†
* DADE-B†
* 56 (ISEE-1)
* 57 (IUE)
* 58 (HCMM)
* 59 (ICE)
* 60 (SAGE)
* 61 (Magsat)
* 62 (DE-1)
* 63 (DE-2)
* 64 (SME)
* 65 (CCE)
* 66 (COBE)
* 67 (EUVE)

|

MIDEX|

* 69 (RXTE)
* 71 (ACE)
* 77 (FUSE)
* 78 (IMAGE)
* 80 (WMAP)
* FAME
* 84 (Swift)
* 85–89 (THEMIS)
* 92 (WISE)
* 95 (TESS)
* 96 (ICON)
* SPHEREx

SMEX|

* 68 (SAMPEX)
* 70 (FAST)
* 73 (TRACE)
* 74 (SWAS)
* 75 (WIRE)†
* 81 (RHESSI)
* 83 (GALEX)
* 90 (AIM)
* 91 (IBEX)
* 93 (NuSTAR)
* 94 (IRIS)
* GEMS
* IXPE
* PUNCH
* TRACERS

UNEX/MO/I|

* HETE-1†
* 72 (SNOE)
* 76 (TERRIERS)†
* 79 (HETE-2)
* INTEGRAL
* 82 (CHIPSat)
* CINDI
* Suzaku
* TWINS
* Hitomi†
* NICER
* GOLD
* XRISM
* GUSTO
* CASE

Proposals|

| Proposals|

* FINESSE
* Arcus
* OHMIC
* ASTRE
* EXCEDE

|

* Green titles indicates active current missions
* Grey titles indicates cancelled missions
* Italics indicate missions yet to launch
* Symbol † indicates failure en route or before intended mission data returned

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