Observations of a Radial Density Gradient in the Very Local Interstellar Medium by Voyager 2

  title={Observations of a Radial Density Gradient in the Very Local Interstellar Medium by Voyager 2},
  author={William S. Kurth and Donald A. Gurnett},
  journal={The Astrophysical Journal},
4 Citations
Interstellar Now! Missions to Explore Nearby Interstellar Objects
Two extrasolar objects, 1I/'Oumuamua, 2I/Borisov, have passed through our home system in just the last three years. Such interstellar objects provide a previously unforeseen chance to directly sample
Persistent plasma waves in interstellar space detected by Voyager 1
In 2012, Voyager 1 became the first in situ probe of the very local interstellar medium1. The Voyager 1 Plasma Wave System has given point estimates of the plasma density spanning about 30 au of
A Foreshock Model for Interstellar Shocks of Solar Origin: Voyager 1 and 2 Observations
The Voyager 1 (V1) and Voyager 2 (V2) spacecraft were launched in 1977 on a mission to explore the outer planets and reach the heliopause, the boundary between the hot solar plasma and the relatively
Combined ∼10 eV to ∼344 MeV Particle Spectra and Pressures in the Heliosheath along the Voyager 2 Trajectory
We report a unique combination of ~10 eV to ~344 MeV in situ ion measurements from the Plasma Science (PLS), Low Energy Charged Particle (LECP), and Cosmic Ray Subsystem (CRS) experiments on the


Cosmic ray measurements from Voyager 2 as it crossed into interstellar space
The interaction of the interstellar and solar winds is complex, as revealed by differences in intensities and anisotropies of low-energy ions (>0.5 MeV per nucleon) originating inside the heliosphere
Energetic charged particle measurements from Voyager 2 at the heliopause and beyond
The long-anticipated encounter by Voyager 2 (V2) of the region between the heliosphere and the very local interstellar medium (VLISM) occurred toward the end of 2018. Here, we report measurements of
Magnetic field and particle measurements made by Voyager 2 at and near the heliopause
The heliopause is a boundary that separates the heliosheath (which contains magnetic fields and plasmas that originate in the Sun) from the interstellar medium (which contains magnetic fields and
Plasma densities near and beyond the heliopause from the Voyager 1 and 2 plasma wave instruments
The heliopause is the boundary between the hot heliospheric (solar wind) plasma and the relatively cold interstellar plasma. Pressure balance considerations show that there should be a large (factor
Voyager 2 plasma observations of the heliopause and interstellar medium
The solar wind blows outwards from the Sun and forms a bubble of solar material in the interstellar medium. The heliopause (HP) is the boundary that divides the hot tenuous solar wind plasma in the
Three-dimensional Features of the Outer Heliosphere Due to Coupling between the Interstellar and Heliospheric Magnetic Field. V. The Bow Wave, Heliospheric Boundary Layer, Instabilities, and Magnetic Reconnection
The heliosphere is formed due to interaction between the solar wind (SW) and local interstellar medium (LISM). The shape and position of the heliospheric boundary, the heliopause, in space depend on
Precursors To Interstellar Shocks of Solar Origin
On or about 2012 August 25, the Voyager 1 spacecraft crossed the heliopause into the nearby interstellar plasma. In the nearly three years that the spacecraft has been in interstellar space, three
In Situ Observations of Interstellar Plasma with Voyager 1
Electron densities detected by Voyager 1 show that the spacecraft is in the interstellar plasma, and other observations provide strong evidence that Voyager 1 has crossed the heliopause into the nearby interstellar plasma.
Magnetic Field Observations as Voyager 1 Entered the Heliosheath Depletion Region
The observations indicate that Voyager 1 had not crossed the heliopause but had entered a region in the heliosphere that serves as a magnetic highway along which low-energy ions from inside stream away and galactic cosmic rays flow in from interstellar space.
The 2-3 khz Heliospheric Radiation, the IBEX Ribbon, and the Three-dimensional Shape of the Heliopause
Recent Interstellar Boundary Explorer (IBEX) observations indicate that the total dynamic pressure in the interstellar medium is closely partitioned between the plasma and the magnetic field, with an