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Constraining Fundamental Physics with the Event Horizon Telescope

We constrain extensions of general relativity that can be described by a reflection coefficient as described in https://arxiv.org/abs/2001.00041.

Requirements

Python 3.7, SciPy 1.2

Usage

python/main.py includes all the relevant routines. These are:

interpolate_eht_image

Create interpolated digitized EHT image. The csv files characterizing the digitized EHT image are stored in digitize_eht/.

image_analysis

Determine properties of image such as ring diameter, width, deviation from circularity, fractional central brightness, etc.

kerr_reflected_intensities

Get intensities of reflected light rays. Includes kerr_geodesic which calculates the Kerr geodesic of a light ray using odeint.

xyI_add_reflected_to_eht

Add reflected image to the original EHT image.

check_exclusion

Check if a modified gravity image is consistent with the EHT observtions.

exclusion_plots

Creates exclusion plots.

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