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Ulysses Solar Wind Observations Over the Poles of the Sun (SWOOPS) Alpha Particle Distribution Function Fitting Parameters, Key Parameter (K0), 4 min Data

ResourceID
spase://NASA/NumericalData/Ulysses/SWOOPS/AlphaParticle/ParticleDistributions/PT4M

Description

This File contains the Parameters obtained by fitting Data to a Bi-Maxwellian Core-Beam Distribution. Under normal Circumstances, the first (slow) Population is the Core and the second (fast) Population is the Beam. When the Interplanetary Magnetic Field is folded back on itself due to Turbulence or other Processes the relation of the first and second Populations to the Core and Beam, respectively, is reversed (see, e.g., M.M. Neugebauer and B.E. Goldstein, AIP Conf. Proc. 1539, 46, 2013). The Vector Magnetic Field is given in RTN Coordinates and it was obtained for the Time at which the Peak of the Alpha Particle Distribution Function was measured. Only good Fits are retained.

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Version:2.4.0

NumericalData

ResourceID
spase://NASA/NumericalData/Ulysses/SWOOPS/AlphaParticle/ParticleDistributions/PT4M
ResourceHeader
ResourceName
Ulysses Solar Wind Observations Over the Poles of the Sun (SWOOPS) Alpha Particle Distribution Function Fitting Parameters, Key Parameter (K0), 4 min Data
ReleaseDate
2022-05-25 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11
Note
Only known prior metadata Release Date
RevisionEvent
ReleaseDate
2022-05-25 12:34:56.789
Note
Updated to SPASE Version 2.4.0, replace apostrophes, no-break space and other spurious text, metadata revised by LFB
Description

This File contains the Parameters obtained by fitting Data to a Bi-Maxwellian Core-Beam Distribution. Under normal Circumstances, the first (slow) Population is the Core and the second (fast) Population is the Beam. When the Interplanetary Magnetic Field is folded back on itself due to Turbulence or other Processes the relation of the first and second Populations to the Core and Beam, respectively, is reversed (see, e.g., M.M. Neugebauer and B.E. Goldstein, AIP Conf. Proc. 1539, 46, 2013). The Vector Magnetic Field is given in RTN Coordinates and it was obtained for the Time at which the Peak of the Alpha Particle Distribution Function was measured. Only good Fits are retained.

Acknowledgement
D.J. McComas, B.E. Goldstein, M.M. Neugebauer, A. Tenerani
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/David.J.McComas
2.PrincipalInvestigatorspase://SMWG/Person/Bruce.E.Goldstein
3.PrincipalInvestigatorspase://SMWG/Person/Marcia.M.Neugebauer
4.PrincipalInvestigatorspase://SMWG/Person/Anna.Tenerani
5.MetadataContactspase://SMWG/Person/Robert.E.McGuire
6.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
The Ulysses Solar Wind Observations Over the Poles of the Sun, SWOOPS, Instrument Web Page hosted at the Los Alamos National Laboratory, LANL
URL
Description

The Ulysses SWOOPS Web Page, LANL

PriorIDs
spase://VSPO/NumericalData/Ulysses/SWOOPS/AlphaParticle/ParticleDistributions/PT4M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

Access to Data in CDF Format via ftp from SPDF

AccessURL
Name
HTTPS from SPDF
URL
Description

Access to Data in CDF Format via http from SPDF

AccessURL
Name
CDAWeb
URL
ProductKey
UY_ALPHA-FIT-PARAMETERS_SWOOPS
Description

Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb

Format
CDF
Encoding
None
Acknowledgement
D.J. McComas, B.E. Goldstein, M.M. Neugebauer, A. Tenerani. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
UY_ALPHA-FIT-PARAMETERS_SWOOPS
Description

Web Service to this product using the HAPI interface.

Format
CSV
Acknowledgement
D.J. McComas, B.E. Goldstein, M.M. Neugebauer, A. Tenerani. Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
MagneticField
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1990-11-18 12:56:11.000
StopDate
2009-06-30 15:38:12.000
Cadence
PT4M
ObservedRegion
Heliosphere
ObservedRegion
Heliosphere.Inner
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
Epoch Time
ParameterKey
Epoch
Description

Epoch Time

Caveats
This Parameter exhibits an increasing Monotonic Progression.
Cadence
PT4M
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Epoch
ValueFormat
E14.8
ValidMin
18-Nov-1990 00:00:00.000
ValidMax
01-Jul-2009 00:00:00.000
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #2
Name
Heliographic Latitude, HG
Set
Time Series defined by using: EPOCH
ParameterKey
heliographicLatitude
Description

Heliographic Latitude in Heliographic, HG, Coordinates

Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
HG
RenderingHints
DisplayType
TimeSeries
AxisLabel
HG_Lat
ValueFormat
F7.1
ScaleType
LinearScale
ValidMin
-90.0
ValidMax
90.0
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #3
Name
Heliocentric Distance
Set
Time Series defined by using: EPOCH
ParameterKey
heliocentricDistance
Description

Heliocentric Distance

Cadence
PT4M
Units
ua
UnitsConversion
1.495978706961e11>m
RenderingHints
DisplayType
TimeSeries
AxisLabel
Ulysses_Dist
ValueFormat
F8.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Support
Qualifier
Magnitude
SupportQuantity
Positional
Parameter #4
Name
He+ Number Density, First Population
Set
Time Series defined by using: EPOCH
ParameterKey
dnft1
Description

Alpha Particle, He+, Number Density, First Population

Cadence
PT4M
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
DnFt1 He+
ValueFormat
F11.5
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Scalar
ParticleQuantity
NumberDensity
AtomicNumber
2
Parameter #5
Name
He+ Number Density, Second Population
Set
Time Series defined by using: EPOCH
ParameterKey
dnft2
Description

Alpha Particle, He+, Number Density, Second Population

Cadence
PT4M
Units
cm^-3
UnitsConversion
1.0e6>m^-3
RenderingHints
DisplayType
TimeSeries
AxisLabel
DnFt2 He+
ValueFormat
F11.5
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Scalar
ParticleQuantity
NumberDensity
AtomicNumber
2
Parameter #6
Name
He+ Relative Speed, First Population
Set
Time Series defined by using: EPOCH
ParameterKey
vft1
Description

Alpha Particle, He+, Speed of the First Population relative to the Speed parallel to the Magnetic Field, <v_par>

Caveats
The Parameter "denrat" is equal to (dnft1+dnft2)/dens, where "dens" is the Value of the Density found in the Moments Calculation. This Value can be used as a further Consistency Check and ideally denrat would be equal to one. Data with vft1>vft2 are set to the FILLVAL, -1.0e30.
Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
VFt1 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
-99999.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
FieldAligned
Qualifier
Parallel
ParticleQuantity
Velocity
AtomicNumber
2
Parameter #7
Name
He+ Relative Speed, Second Population
Set
Time Series defined by using: EPOCH
ParameterKey
vft2
Description

Alpha Particle, He+, Speed of the Second Population relative to the Speed parallel to the Magnetic Field, <v_par>

Caveats
The Parameter "denrat" is equal to (dnft1+dnft2)/dens, where "dens" is the Value of the Density found in the Moments Calculation. This Value can be used as a further Consistency Check and ideally denrat would be equal to one. Data with vft1>vft2 are set to the FILLVAL, -1.0e30.
Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
VFt2 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
-99999.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
Perpendicular
ParticleQuantity
Velocity
AtomicNumber
2
Parameter #8
Name
He+ Thermal Speed, Parallel, First Population
Set
Time Series defined by using: EPOCH
ParameterKey
wpar1
Description

Alpha Particle, He+, Thermal Speed of the First Population parallel to the Magnetic Field

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
W_Par1 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
FieldAligned
Qualifier
Parallel
ParticleQuantity
ThermalSpeed
AtomicNumber
2
Parameter #9
Name
He+ Thermal Speed, Parallel, Second Population
Set
Time Series defined by using: EPOCH
ParameterKey
wpar2
Description

Alpha Particle, He+, Thermal Speed of the Second Population parallel to the Magnetic Field

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
W_Par2 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
FieldAligned
Qualifier
Parallel
ParticleQuantity
ThermalSpeed
AtomicNumber
2
Parameter #10
Name
He+ Thermal Speed, Perpendicular, First Population
Set
Time Series defined by using: EPOCH
ParameterKey
wper1
Description

Alpha Particle, He+, Thermal Speed of the First Population perpendicular to the Magnetic Field

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
W_Per1 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
Perpendicular
ParticleQuantity
ThermalSpeed
AtomicNumber
2
Parameter #11
Name
He+ Thermal Speed, Perpendicular, Second Population
Set
Time Series defined by using: EPOCH
ParameterKey
wper2
Description

Alpha Particle, He+, Thermal Speed of the Second Population perpendicular to the Magnetic Field

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
W_Per2 He+
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Component
Qualifier
Perpendicular
ParticleQuantity
ThermalSpeed
AtomicNumber
2
Parameter #12
Name
He+ T_par/T_perp, First Population
Set
Time Series defined by using: EPOCH
ParameterKey
anis1
Description

Alpha Particle, He+, Temperature Ratio, Parallel/Perpendicular, First Population

Cadence
PT4M
RenderingHints
DisplayType
TimeSeries
AxisLabel
Anis1 He+
ValueFormat
F9.3
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Ratio
ParticleQuantity
Temperature
AtomicNumber
2
Parameter #13
Name
He+ T_par/T_perp, Second Population
Set
Time Series defined by using: EPOCH
ParameterKey
anis2
Description

Alpha Particle, He+, Temperature Ratio, Parallel/Perpendicular, Second Population

Cadence
PT4M
RenderingHints
DisplayType
TimeSeries
AxisLabel
Anis2 He+
ValueFormat
F9.3
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Ratio
ParticleQuantity
Temperature
AtomicNumber
2
Parameter #14
Name
He+ Normalized Total Density
Set
Time Series defined by using: EPOCH
ParameterKey
denrat
Description

Alpha Particle, He+, Normalized Total Density, equal to the Sum of the First and Second Population Densities divided by the Total Density: (dnft1+dnft2)/density

Caveats
The Parameter "denrat" is equal to (dnft1+dnft2)/dens, where "dens" is the Value of the Density found in the Moments Calculation. This Value can be used as a further Consistency Check and ideally denrat would be equal to one. Data with vft1>vft2 are set to the FILLVAL, -1.0e30.
Cadence
PT4M
RenderingHints
DisplayType
TimeSeries
AxisLabel
DenRat He+
ValueFormat
F10.3
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Ratio
Qualifier
Total
ParticleQuantity
NumberDensity
AtomicNumber
2
Parameter #15
Name
He+ Flow Speed
Set
Time Series defined by using: EPOCH
ParameterKey
V_MAG
Description

Alpha Particle, He+, Velocity, Magnitude

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
V_MAG (RTN)
ValueFormat
F8.1
ScaleType
LinearScale
ValidMin
0.0
ValidMax
999999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
AtomicNumber
2
Parameter #16
Name
He+ Alfven Speed
Set
Time Series defined by using: EPOCH
ParameterKey
Valf
Description

Alpha Particle, He+, Alfven Speed

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
V_Alf
ValueFormat
F9.2
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Mixed
MixedQuantity
AlfvenVelocity
ParticleType
AlphaParticle
Qualifier
Scalar
Parameter #17
Name
H+, He+ Streaming Speed
Set
Time Series defined by using: EPOCH
ParameterKey
Vap
Description

Proton, H+, Alpha Particle, He+, Streaming Velocity, Magnitude

Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
RenderingHints
DisplayType
TimeSeries
AxisLabel
V_ap
ValueFormat
F10.3
ScaleType
LinearScale
ValidMin
0.0
ValidMax
99999.0
FillValue
-1.0e+31
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Scalar
ParticleQuantity
Velocity
AtomicNumber
2
AtomicNumber
1
Parameter #18
Name
Magnetic Field BR Component, RTN
Set
Time Series defined by using: EPOCH
ParameterKey
BR
Description

Magnetic Field BR Component in Inertial Radial, Tangential, Normal, RTN, Coordinates

Cadence
PT4M
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
RenderingHints
DisplayType
TimeSeries
AxisLabel
BR_(RTN)
ValueFormat
F10.4
ScaleType
LinearScale
ValidMin
-9999.0
ValidMax
9999.0
FillValue
-1.0e+31
Field
Qualifier
Component.I
FieldQuantity
Magnetic
Parameter #19
Name
Magnetic Field BT Component, RTN
Set
Time Series defined by using: EPOCH
ParameterKey
BT
Description

Magnetic Field BT Component in Inertial Radial, Tangential, Normal, RTN, Coordinates

Cadence
PT4M
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
RenderingHints
DisplayType
TimeSeries
AxisLabel
BT_(RTN)
ValueFormat
F10.4
ScaleType
LinearScale
ValidMin
-9999.0
ValidMax
9999.0
FillValue
-1.0e+31
Field
Qualifier
Component.J
FieldQuantity
Magnetic
Parameter #20
Name
Magnetic Field BN Component, RTN
Set
Time Series defined by using: EPOCH
ParameterKey
BN
Description

Magnetic Field BN Component in Inertial Radial, Tangential, Normal, RTN, Coordinates

Cadence
PT4M
Units
nT
UnitsConversion
1.0e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
HGI
RenderingHints
DisplayType
TimeSeries
AxisLabel
BN_(RTN)
ValueFormat
F10.4
ScaleType
LinearScale
ValidMin
-9999.0
ValidMax
9999.0
FillValue
-1.0e+31
Field
Qualifier
Component.K
FieldQuantity
Magnetic
Parameter #21
Name
Magnetic Field Magnitude
Set
Time Series defined by using: EPOCH
ParameterKey
B_MAG
Description

Magnetic Field Magnitude

Cadence
PT4M
Units
nT
UnitsConversion
1.0e-9>T
RenderingHints
DisplayType
TimeSeries
AxisLabel
B_MAG
ValueFormat
F10.4
ScaleType
LinearScale
ValidMin
0.0
ValidMax
9999.0
FillValue
-1.0e+31
Field
Qualifier
Magnitude
FieldQuantity
Magnetic