`widget_BH`

A module for handling the black hole widgets found in 10_Bonus_Black_Holes_as_DM.ipynb.

ToC: Functions

`minnumberBH`(galaxy)	A function that returns the minimum number of black holes (prior to multiplying by the `scale`) appropriate for the supplied galaxy.
`maxnumberBH`(galaxy)	A function that returns the maximum number of black holes (prior to multiplying by the `scale`) appropriate for the supplied galaxy.
`defaultnumber`(galaxy)	A function that returns the default number of black holes (prior to multiplying by the `scale`) appropriate for the supplied galaxy.
`maxrcutBH`(galaxy)	A function that returns the maximum cutoff radius for black holes (\(kpc\)), appropriate for the supplied galaxy.
`defaultrcutBH`(galaxy)	A function that returns the default cutoff radius for black holes (\(kpc\)), appropriate for the supplied galaxy.
`f5533`(arraysize, massMiniBH, rcut)	Generate a plot of the NGC5533 data and components alongside an image of a galaxy with dots representing black holes.
`f7814`(arraysize, massMiniBH, rcut)	Generate a plot of the NGC7814 data and components alongside an image of a galaxy with dots representing black holes.
`interactive_plot_5533`(widgetfunction)	Generate an interactive plot widget, allowing the user to interact with the NGC5533 data and the galaxy's components.
`interactive_plot_7814`(widgetfunction)	Generate an interactive plot widget, allowing the user to interact with the NGC7814 data and the galaxy's components.
`on_button_clicked_5533`(_)	A function to reset values when the 'Best Fit' button for NGC5533 is clicked.
`on_button_clicked_7814`(_)	A function to reset values when the 'Best Fit' button for NGC7814 is clicked.

ToC: Attributes

`img`	An array of RGB data for a galaxy image (images/A_spiral_snowflake.jpg), imported using matplotlib.pyplot.imread.
`center`	Coordinate pair indicating the pixel location of the center of the galaxy in `img`.
`minkpc`	The minimum value (\(kpc\)), allowed for the radial position of black holes on the plot.
`maxkpc`	The maximum value (\(kpc\)), allowed for the radial position of black holes on the plot.
`kpctopixels`	Number of pixels per kpc for plotting black holes over black hole image.
`minmassBH`	The minimum value, in solar masses, allowed for the (average) black hole mass.
`maxmassBH`	The maximum value, in solar masses, allowed for the (average) black hole mass.
`defaultmass`	The default value, in solar masses, for the (average) black hole mass.
`scale`	The number of black holes represented by each dot in the galaxy plot.
`stepN`	The step size of the slider controlling the number of black holes. In terms of number of black holes represented, this step size is multiplied by the `scale`.
`minrcutBH`	The minimum cutoff radius for black holes (\(kpc\)).
`style`	A dictionary for slider styling common to all sliders in this library.
`layout`	A dictionary for slider layout commont to all sliders in this library.
`arraysize_5533`	Slider for controlling the number of black holes for NGC5533.
`massMiniBH_5533`	Slider for controlling the black hole mass for NGC5533.
`rcut_5533`	Slider for controlling the cutoff radius for black hole placement for NGC5533.
`arraysize_7814`	Slider for controlling the number of black holes for NGC7814.
`massMiniBH_7814`	Slider for controlling the black hole mass for NGC7814.
`rcut_7814`	Slider for controlling the cutoff radius for black hole placement for NGC7814.
`button_5533`	A button that returns all settings for NGC5533 to the best fit.
`out_5533`	A handler for widget output NGC5533.
`button_7814`	A button that returns all settings for NGC7814 to the best fit.
`out_7814`	A handler for widget output for NGC7814.

Members

widget_BH.img

An array of RGB data for a galaxy image (images/A_spiral_snowflake.jpg), imported using matplotlib.pyplot.imread.

Type: array

widget_BH.center = [1960, 1800]

Coordinate pair indicating the pixel location of the center of the galaxy in img.

Type: array

widget_BH.minkpc = 0

The minimum value (\(kpc\)), allowed for the radial position of black holes on the plot.

Type: int

widget_BH.maxkpc = 100

The maximum value (\(kpc\)), allowed for the radial position of black holes on the plot.

Type: int

widget_BH.kpctopixels = 20

Number of pixels per kpc for plotting black holes over black hole image.

Type: int

widget_BH.minmassBH = 0.1

The minimum value, in solar masses, allowed for the (average) black hole mass.

Type: float

widget_BH.maxmassBH = 3.8

The maximum value, in solar masses, allowed for the (average) black hole mass.

Type: float

widget_BH.defaultmass = 1.5

The default value, in solar masses, for the (average) black hole mass.

Type: float

widget_BH.scale = 1000000.0

The number of black holes represented by each dot in the galaxy plot.

Type: int

widget_BH.stepN = 5

The step size of the slider controlling the number of black holes. In terms of number of black holes represented, this step size is multiplied by the scale.

Int

widget_BH.minnumberBH(galaxy)

A function that returns the minimum number of black holes (prior to multiplying by the scale) appropriate for the supplied galaxy.

Parameters

galaxy[string | int]: The name or number (for NGC) of the selected galaxy. Names are not case-sensitive and ignore spaces. Allowed inputs: “NGC5533” or “NGC7814”.

Returns

[int] The minimum number of black holes, prior to multiplying by the scale.

See also

For an example usecase of this function, see arraysize_5533.

widget_BH.maxnumberBH(galaxy)

A function that returns the maximum number of black holes (prior to multiplying by the scale) appropriate for the supplied galaxy.

Parameters

galaxy[string | int]: The name or number (for NGC) of the selected galaxy. Names are not case-sensitive and ignore spaces. Allowed inputs: “NGC5533” or “NGC7814”.

Returns

[int] The maximum number of black holes, prior to multiplying by the scale.

See also

For an example usecase of this function, see arraysize_5533.

widget_BH.defaultnumber(galaxy)

A function that returns the default number of black holes (prior to multiplying by the scale) appropriate for the supplied galaxy.

Parameters

galaxy[string | int]: The name or number (for NGC) of the selected galaxy. Names are not case-sensitive and ignore spaces. Allowed inputs: “NGC5533” or “NGC7814”.

Returns

[int] The default number of black holes, prior to multiplying by the scale.

See also

For an example usecase of this function, see arraysize_5533.

widget_BH.minrcutBH = 0.1

The minimum cutoff radius for black holes (\(kpc\)).

Type: float

widget_BH.maxrcutBH(galaxy)

A function that returns the maximum cutoff radius for black holes (\(kpc\)), appropriate for the supplied galaxy.

Parameters

galaxy[string | int]: The name or number (for NGC) of the selected galaxy. Names are not case-sensitive and ignore spaces. Allowed inputs: “NGC5533” or “NGC7814”.

Returns

[float] The maximum cutoff radius for black holes.

See also

For an example usecase of this function, see arraysize_5533.

widget_BH.defaultrcutBH(galaxy)

A function that returns the default cutoff radius for black holes (\(kpc\)), appropriate for the supplied galaxy.

Parameters

galaxy[string | int]: The name or number (for NGC) of the selected galaxy. Names are not case-sensitive and ignore spaces. Allowed inputs: “NGC5533” or “NGC7814”.

Returns

[float] The default cutoff radius for black holes.

See also

For an example usecase of this function, see arraysize_5533.

widget_BH.style

A dictionary for slider styling common to all sliders in this library.

Type: dict

widget_BH.layout

A dictionary for slider layout commont to all sliders in this library.

Type: dict

widget_BH.f5533(arraysize, massMiniBH, rcut)

Generate a plot of the NGC5533 data and components alongside an image of a galaxy with dots representing black holes.

This function is intended for use as part of a widget.

Parameters

arraysize: [int]: Size intended for the radius and angle arrays.
massMiniBH: [int]: Mass of the tiny black holes, in solar masses.
rcut: [float]: Cutoff radius for black hole placement (\(kpc\)).

Returns

None

See also

For an example usage of this function, see the notebook 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH.f7814(arraysize, massMiniBH, rcut)

Generate a plot of the NGC7814 data and components alongside an image of a galaxy with dots representing black holes.

This function is intended for use as part of a widget.

Parameters

arraysize: [int]: Size intended for the radius and angle arrays.
massMiniBH: [int]: Mass of the tiny black holes, in solar masses.
rcut: [float]: Cutoff radius for black hole placement (\(kpc\)).

Returns

None

See also

For an example usage of this function, see the notebook 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH.arraysize_5533

Slider for controlling the number of black holes for NGC5533.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.massMiniBH_5533

Slider for controlling the black hole mass for NGC5533.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.rcut_5533

Slider for controlling the cutoff radius for black hole placement for NGC5533.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.arraysize_7814

Slider for controlling the number of black holes for NGC7814.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.massMiniBH_7814

Slider for controlling the black hole mass for NGC7814.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.rcut_7814

Slider for controlling the cutoff radius for black hole placement for NGC7814.

Type: ipywidgets.widgets.widget_float.FloatSlider

widget_BH.interactive_plot_5533(widgetfunction)

Generate an interactive plot widget, allowing the user to interact with the NGC5533 data and the galaxy’s components.

Parameters

widgetfunction: [function]: A function that generates the base plot for the widget to alter. This should, in all likelihood, be f5533.

Returns

[ipywidgets.widgets.interaction.interactive] – creates sliders to make the plot interactive.

See also

For an example usage of this function, see the notebook 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH.interactive_plot_7814(widgetfunction)

Generate an interactive plot widget, allowing the user to interact with the NGC7814 data and the galaxy’s components.

Parameters

widgetfunction: [function]: A function that generates the base plot for the widget to alter. This should, in all likelihood, be f7814.

Returns

[ipywidgets.widgets.interaction.interactive] – creates sliders to make the plot interactive.

See also

For an example usage of this function, see the notebook 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH.button_5533

A button that returns all settings for NGC5533 to the best fit.

Type: ipywidgets.widgets.widget_button.Button

widget_BH.out_5533

A handler for widget output NGC5533.

Type: ipywidgets.widgets.widget_output.Output

widget_BH.on_button_clicked_5533(_)

A function to reset values when the ‘Best Fit’ button for NGC5533 is clicked.

Parameters

None.

Returns

None

Example

>>> button_5533.on_click(on_button_clicked_5533)

This renders the button click behavior seen in 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH.button_7814

A button that returns all settings for NGC7814 to the best fit.

Type: ipywidgets.widgets.widget_button.Button

widget_BH.out_7814

A handler for widget output for NGC7814.

Type: ipywidgets.widgets.widget_output.Output

widget_BH.on_button_clicked_7814(_)

A function to reset values when the ‘Best Fit’ button for NGC7814 is clicked.

Parameters

None.

Returns

None

Example

>>> button_7814.on_click(on_button_clicked_7814)

This renders the button click behavior seen in 10_Bonus_Black_Holes_as_DM.ipynb on Binder.

widget_BH

ToC: Functions

ToC: Attributes

Members

`widget_BH`