Theoretical formulas for space plasma physics

helpful in dataframes

default units are SI units for space plasma physics

• B : magnetic field, nT
• n : number density, cm^-3
• T : temperature, eV

Reference

• plasmapy.formulary provides theoretical formulas for calculation of physical quantities helpful for plasma physics.

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df_beta

 df_beta (df:polars.dataframe.frame.DataFrame, T:str='T', n:str='n',
          B:str='B', col_name:str='beta',
          T_unit:astropy.units.core.Unit=Unit("eV"),
          n_unit:astropy.units.core.Unit=Unit("1 / cm3"),
          B_unit:astropy.units.core.Unit=Unit("nT"))

	Type	Default	Details
df	DataFrame
T	str	T	temperature of the plasma
n	str	n	particle density of the plasma
B	str	B	magnetic field in the plasma,
col_name	str	beta
T_unit	Unit	eV
n_unit	Unit	1 / cm3
B_unit	Unit	nT
Returns	DataFrame

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ldf_Alfven_speed

 ldf_Alfven_speed (ldf:polars.lazyframe.frame.LazyFrame, **kwargs)

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df_Alfven_speed

 df_Alfven_speed (df:polars.dataframe.frame.DataFrame, B:str='B',
                  n:str='n', ion:Union[str,int,numpy.integer,plasmapy.part
                  icles.particle_class.Particle,plasmapy.particles.particl
                  e_class.CustomParticle,astropy.units.quantity.Quantity]=
                  'p+', col_name='Alfven_speed', sign=True,
                  B_unit:astropy.units.core.Unit=Unit("nT"),
                  n_unit:astropy.units.core.Unit=Unit("1 / cm3"),
                  speed_unit:astropy.units.core.Unit=Unit("km / s"))

	Type	Default	Details
df	DataFrame
B	str	B	magnetic field in the plasma, could be a component, as plasmapy will take abs of it
n	str	n	particle density of the plasma
ion	Union	p+
col_name	str	Alfven_speed
sign	bool	True
B_unit	Unit	nT
n_unit	Unit	1 / cm3
speed_unit	Unit	km / s

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df_thermal_spd2temp

 df_thermal_spd2temp (df:polars.lazyframe.frame.LazyFrame, speed_col,
                      speed_unit=Unit("km / s"))

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thermal_spd2temp

 thermal_spd2temp (speed, speed_unit=Unit("km / s"))