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- #Jour ey into a black hole movie#
- #Jour ey into a black hole code#
- #Jour ey into a black hole professional#
electrically charged) black hole with effects of gravitational lensing on a stellar background field, as well as animated visualizations of magneto-hydrodynamic simulations of a disk and jet around a non-rotating black hole (Hamilton 2018). It now offers journeys into a Schwarzschild or a Reissner-Nordström (i.e. The first depictions were very schematic, but the website was constantly implemented. In 1998 Andrew Hamilton started to develop for a student project at the University of Colorado a “ Black Hole Flight Simulator”, with film clips that have been shown at planetariums, also available on the Internet. The asymmetric appearance of the inner disk edge results from the frame-dragging effect of black hole rotation (from Bromley et al. The colors encode the apparent light frequency, the white strip divides redshifted and blueshifted regions. The inner and outer radii of the Keplerian (circularly rotating) disk are at 1.24 M and 6 M. Image of a geometrically thin disk around an extreme Kerr (maximally rotating) black hole seen at an inclination of 75°. (1997) calculated integrated line profiles from a geometrically thin disk about a Schwarzschild and an extreme Kerr black hole, in order to get an observational signature of the frame-dragging effect (Figure 5). Disk images of accretion disks extending up to 20 Schwarzschild radii for different spins of Kerr black holes, viewed in different energy ranges and inclination angles (from Zhang et al. Left-hand side of the disk is approaching the observer and blueshifted (from Fanton et al. The white zones stand for the regions with zero redshift. The left column refers to a non-rotating black hole, the right one to a rapidly rotating black hole with a=0.998 M. False color contour maps showing how the monochromatic radiation emitted by a Keplerian accretion disk would be seen at infinity for various values of the inclination angle to the plane of the disk (top to bottom : 5°, 45°, 85°).
#Jour ey into a black hole code#
(2002) used the same code to produce black-and-white images of standard thin accretion disks around black holes with different spins, viewing angles and energy bands (figure 4). They developed a new program of ray tracing in Kerr metric, and added false colors to encode the degree of spectral shift and temperature maps (figure 3). More elaborate views of a geometrically thin and optically thick accretion disk around a Kerr black hole were obtained by Fanton et al. Colors indicate combined gravitational and Doppler shifts (from Viergutz 1993). Primary and secondary images of a simple accretion disk model around a Kerr black hole, seen by a faraway observer. The result is a colored generalization of the picture by Cunningham and Bardeen (1973) shown in 40 Years of Black Hole Imaging (1). He treated slightly thick disks and produced colored contours, including the disk’s secondary image which wraps under the black hole (figure 2). The first simulations of the shape of accretion disks around Kerr black holes were performed by Viergutz (1993). Trip to a black hole by Robert Nemiroff, 1993.
#Jour ey into a black hole movie#
He displayed computer-generated illustrations highlighting the distortion effects on a background stellar field but no accretion disk, and made a short movie now available on the internet (Nemiroff 2018), two snapshots of which are shown in figure 1. Nemiroff (1993) described the visual distortion effects to an observer traveling around and descending to the surface of a neutron star and a black hole, discussing multiple imaging, red- and blue-shifting, the photon sphere and multiple Einstein rings. Stuckey (1993) studied photon trajectories which circle a static black hole one or two times and terminate at their emission points (« boomerang photons »), producing a sequence of ring-shaped mirror images. Then, unaware of Marck’s results, several researchers of the 1990’s were involved in the program of calculating black hole gravitational lensing effects in various situations.
#Jour ey into a black hole professional#
Unfortunately Marck’s simulations of black hole accretion disks remained mostly ignored from the professional community, due to the fact that they were not published in peer-reviewed journals and, after their author prematurely died in May 2000, nobody could find the trace of his computer program… Sequel of the previous post 40 Years of Black Hole Imaging (2) : Colors and Movies 1989-1993 Generalizations to Kerr Black Holes