title: Direct observations of interstellar H, He, and O by the Interstellar Boundary Explorer.
abstract: Neutral gas of the local interstellar medium flows through the inner solar system while being deflected by solar gravity and depleted by ionization. The dominating feature in the energetic neutral atom Interstellar Boundary Explorer (IBEX) all-sky maps at low energies is the hydrogen, helium, and oxygen interstellar gas flow. The He and O flow peaked around 8 February 2009 in accordance with gravitational deflection, whereas H dominated after 26 March 2009, consistent with approximate balance of gravitational attraction by solar radiation pressure. The flow distributions arrive from a few degrees above the ecliptic plane and show the same temperature for He and O. An asymmetric O distribution in ecliptic latitude points to a secondary component from the outer heliosheath.
authors.affiliation: Space Science Center and Department of Physics, University of New Hampshire, Durham, NH 03824, USA. Eberhard.moebius@unh.edu
authors.forename: E
authors.initials: E
authors.lastname: Möbius
authors.forename: P
authors.initials: P
authors.lastname: Bochsler
authors.forename: M
authors.initials: M
authors.lastname: Bzowski
authors.forename: G B
authors.initials: GB
authors.lastname: Crew
authors.forename: H O
authors.initials: HO
authors.lastname: Funsten
authors.forename: S A
authors.initials: SA
authors.lastname: Fuselier
authors.forename: A
authors.initials: A
authors.lastname: Ghielmetti
authors.forename: D
authors.initials: D
authors.lastname: Heirtzler
authors.forename: V V
authors.initials: VV
authors.lastname: Izmodenov
authors.forename: M
authors.initials: M
authors.lastname: Kubiak
authors.forename: H
authors.initials: H
authors.lastname: Kucharek
authors.forename: M A
authors.initials: MA
authors.lastname: Lee
authors.forename: T
authors.initials: T
authors.lastname: Leonard
authors.forename: D J
authors.initials: DJ
authors.lastname: McComas
authors.forename: L
authors.initials: L
authors.lastname: Petersen
authors.forename: L
authors.initials: L
authors.lastname: Saul
authors.forename: J A
authors.initials: JA
authors.lastname: Scheer
authors.forename: N
authors.initials: N
authors.lastname: Schwadron
authors.forename: M
authors.initials: M
authors.lastname: Witte
authors.forename: P
authors.initials: P
authors.lastname: Wurz