Observation by Pioneer 7 of He + in the distant coma of Halley's comet
During the approach of Pioneer 7 to a distance of 12.1 × 10 6 km from the nucleus of Comet P/Halley on March 20, 1986, features were observed in plasma analyzer data that we interpret as He + produced by charge exchange of solar wind He ++ with neutral cometary material. The maximum flux of the He +...
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| Veröffentlicht in: | Icarus (New York, N.Y. 1962) N.Y. 1962), 1987-07, Vol.71 (1), p.192-197 |
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| container_title | Icarus (New York, N.Y. 1962) |
| container_volume | 71 |
| creator | Mihalov, J.D. Collard, H.R. Intriligator, D.S. Barnes, A. |
| description | During the approach of Pioneer 7 to a distance of 12.1 × 10
6 km from the nucleus of Comet P/Halley on March 20, 1986, features were observed in plasma analyzer data that we interpret as He
+ produced by charge exchange of solar wind He
++ with neutral cometary material. The maximum flux of the He
+ was observed several hours after the closest approach of the spacecraft to the nucleus, and is unexpectedly large. Remarkable large discontinuous flux changes were also observed. |
| doi_str_mv | 10.1016/0019-1035(87)90172-2 |
| format | Article |
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6 km from the nucleus of Comet P/Halley on March 20, 1986, features were observed in plasma analyzer data that we interpret as He
+ produced by charge exchange of solar wind He
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+ was observed several hours after the closest approach of the spacecraft to the nucleus, and is unexpectedly large. Remarkable large discontinuous flux changes were also observed.</description><subject>640107 - Astrophysics & Cosmology- Planetary Phenomena</subject><subject>Astronomy</subject><subject>CHARGED PARTICLES</subject><subject>CHEMICAL COMPOSITION</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>COMETS</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>HALLEY COMET</subject><subject>HELIUM IONS</subject><subject>INTERACTIONS</subject><subject>Interplanetary space</subject><subject>IONS</subject><subject>PIONEER SPACE PROBES</subject><subject>PLASMA DIAGNOSTICS</subject><subject>SOLAR ACTIVITY</subject><subject>Solar system</subject><subject>SOLAR WIND</subject><subject>SPACE VEHICLES</subject><subject>TIME DEPENDENCE</subject><subject>VEHICLES</subject><issn>0019-1035</issn><issn>1090-2643</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNp9kE1rFTEUhoMoeL36D7oIIlqR0ZOvyWQjlNLaQqFd6DrkZk5oZG5Sk7Rw_31nOqVLVwdynvOS9yHkiMF3Bqz_AcBMx0Co40F_NcA07_grsmFgoOO9FK_J5gV5S97V-hcA1GDEhpxf7yqWB9diTnR3oDfzRCxU0xzoBdJvNCbabpGOsTaXGvV57552bprw8KUuD9jekzfBTRU_PM8t-XN-9vv0oru6_nV5enLVeclk67gZYNy5sR9VYExwD0yhNKLvhRTOIEfORTBeDYPWRgajwHCmg_QouIYgtuTjmptri7b62NDf-pwS-maVZqDnulvyeYXuSv53j7XZfawep8klzPfVcin0IJSYQbmCvuRaCwZ7V-LelYNlYBezdtFmF2120PbJrOXz2afnfFe9m0Jxycf6cquV6PXAZuxoxZKrzqZWqmVm0AC9MGZJ-bmucfb1ELEsdTB5HGNZ2ow5_v8bj2iBkKA</recordid><startdate>19870701</startdate><enddate>19870701</enddate><creator>Mihalov, J.D.</creator><creator>Collard, H.R.</creator><creator>Intriligator, D.S.</creator><creator>Barnes, A.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>19870701</creationdate><title>Observation by Pioneer 7 of He + in the distant coma of Halley's comet</title><author>Mihalov, J.D. ; Collard, H.R. ; Intriligator, D.S. ; Barnes, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-2980dbad6d5f1132c015e49366343a9e2e223f9c5887794f9509217f4ce3270f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>640107 - Astrophysics & Cosmology- Planetary Phenomena</topic><topic>Astronomy</topic><topic>CHARGED PARTICLES</topic><topic>CHEMICAL COMPOSITION</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>COMETS</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>HALLEY COMET</topic><topic>HELIUM IONS</topic><topic>INTERACTIONS</topic><topic>Interplanetary space</topic><topic>IONS</topic><topic>PIONEER SPACE PROBES</topic><topic>PLASMA DIAGNOSTICS</topic><topic>SOLAR ACTIVITY</topic><topic>Solar system</topic><topic>SOLAR WIND</topic><topic>SPACE VEHICLES</topic><topic>TIME DEPENDENCE</topic><topic>VEHICLES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mihalov, J.D.</creatorcontrib><creatorcontrib>Collard, H.R.</creatorcontrib><creatorcontrib>Intriligator, D.S.</creatorcontrib><creatorcontrib>Barnes, A.</creatorcontrib><creatorcontrib>Carmel Research Center, Santa Monica, CA</creatorcontrib><creatorcontrib>NASA, Ames Research Center, Moffett Field, CA</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Icarus (New York, N.Y. 1962)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mihalov, J.D.</au><au>Collard, H.R.</au><au>Intriligator, D.S.</au><au>Barnes, A.</au><aucorp>Carmel Research Center, Santa Monica, CA</aucorp><aucorp>NASA, Ames Research Center, Moffett Field, CA</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation by Pioneer 7 of He + in the distant coma of Halley's comet</atitle><jtitle>Icarus (New York, N.Y. 1962)</jtitle><date>1987-07-01</date><risdate>1987</risdate><volume>71</volume><issue>1</issue><spage>192</spage><epage>197</epage><pages>192-197</pages><issn>0019-1035</issn><eissn>1090-2643</eissn><coden>ICRSA5</coden><abstract>During the approach of Pioneer 7 to a distance of 12.1 × 10
6 km from the nucleus of Comet P/Halley on March 20, 1986, features were observed in plasma analyzer data that we interpret as He
+ produced by charge exchange of solar wind He
++ with neutral cometary material. The maximum flux of the He
+ was observed several hours after the closest approach of the spacecraft to the nucleus, and is unexpectedly large. Remarkable large discontinuous flux changes were also observed.</abstract><cop>Legacy CDMS</cop><pub>Elsevier Inc</pub><doi>10.1016/0019-1035(87)90172-2</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 0019-1035 |
| ispartof | Icarus (New York, N.Y. 1962), 1987-07, Vol.71 (1), p.192-197 |
| issn | 0019-1035 1090-2643 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier); NASA Technical Reports Server |
| subjects | 640107 - Astrophysics & Cosmology- Planetary Phenomena Astronomy CHARGED PARTICLES CHEMICAL COMPOSITION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COMETS Earth, ocean, space Exact sciences and technology HALLEY COMET HELIUM IONS INTERACTIONS Interplanetary space IONS PIONEER SPACE PROBES PLASMA DIAGNOSTICS SOLAR ACTIVITY Solar system SOLAR WIND SPACE VEHICLES TIME DEPENDENCE VEHICLES |
| title | Observation by Pioneer 7 of He + in the distant coma of Halley's comet |
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