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Cosmicflows-3: Cold Spot Repeller?

  • Authors: Hélène M. Courtois, R. Brent Tully, Yehuda Hoffman, Daniel Pomarède, Romain Graziani, and Alexandra Dupuy

2017 The Astrophysical Journal Letters 847 L6.

  • Provider: AAS Journals

Caption: Figure 1.

Dominant attractors and repellers in the nearby universe. In the top panel, flow streamlines are seeded in the Dipole and Cold Spot repellers, flows are blue and green, respectively, and converge predominantly onto the Shapley and Perseus–Pisces attractors. In the bottom panel, anti-flow streamlines are seeded in the Shapley attractor, with flows in red and black that travel to the Cold Spot and Dipole repellers, respectively. Our home is indicated by the red, green, and blue arrows of length 10,000 km s−1 directed along the supergalactic SGX, SGY, and SGZ axes. The locations of the attractors and repellers lie at the local extrema of the potential. The surfaces that represent the attractors and voids are at symmetric values of the potential field of ±580. The positions are in supergalactic coordinates and are expressed in units of 100 km s−1.

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