Identification

Title

Solar wind originating in funnels: Fast or slow?

Abstract

Aims. We model a hydrogen-helium solar wind originating in funnels, regions of rapid flux tube expansion at the base of the solar corona.', Methods. The time-dependent model describes the particle density, flow speed, temperature parallel and perpendicular to the magnetic field, and the heat flow for each ionization state of hydrogen and helium, and for electrons.', Results. For a large range of heating parameters, the funnel has two co-existing solutions: both a slow and a fast solar wind solution result from the same heating parameters, depending on the initial state from which the model was started. Though the fast and the slow solar wind can co-exist it is difficult to change from a fast solar wind to a slow solar wind or vice versa. A significant change in the heating parameters is required to flip the solution, and it takes a long time, about one month, to reach the other steady state solution. When either the funnel or helium is removed from the model, we no longer have two co-existing states.

Resource type

document

Resource locator

Unique resource identifier

code

http://n2t.net/ark:/85065/d7hm5969

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Text

originating controlled vocabulary

title

Resource Type

reference date

date type

publication

effective date

2016-01-01T00:00:00Z

Geographic location

West bounding longitude

East bounding longitude

North bounding latitude

South bounding latitude

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2007-11-11T00:00:00Z

Frequency of update

Quality and validity

Lineage

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Limitations on public access

None

Responsible organisations

Responsible party

contact position

OpenSky Support

organisation name

UCAR/NCAR - Library

full postal address

PO Box 3000

Boulder

80307-3000

email address

opensky@ucar.edu

web address

http://opensky.ucar.edu/

name: homepage

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact