Superclustering with the Atacama Cosmology Telescope and Dark Energy Survey: I. Evidence for thermal energy anisotropy using oriented stacking
Creators: name: Lokken, M.
name: Hložek, R.
name: van Engelen, A.
name: Madhavacheril, M.
name: Baxter, E.
name: DeRose, J.
name: Doux, C.
name: Pandey, S.
name: Rykoff, E. S.
name: Stein, G.
name: To, C.
name: Abbott, T. M. C.
name: Adhikari, S.
name: Aguena, M.
name: Allam, S.
name: Andrade-Oliveira, F.
name: Annis, J.
name: Battaglia, N.
name: Bernstein, G. M.
name: Bertin, E.
name: Bond, J. R.
name: Brooks, D.
name: Calabrese, E.
name: Rosell, A. Carnero
name: Kind, M. Carrasco
name: Carretero, J.
name: Cawthon, R.
name: Choi, A.
name: Costanzi, M.
name: Crocce, M.
name: da Costa, L. N.
name: Pereira, M. E. da Silva
name: De Vicente, J.
name: Desai, S.
name: Dietrich, J. P.
name: Doel, P.
name: Dunkley, J.
name: Everett, S.
name: Evrard, A. E.
name: Ferraro, S.
name: Flaugher, B.
name: Fosalba, P.
name: Frieman, J.
name: Gallardo, P. A.
name: García-Bellido, J.
name: Gaztanaga, E.
name: Gerdes, D. W.
name: Giannantonio, T.
name: Gruen, D.
name: Gruendl, R. A.
name: Gschwend, J.
name: Gutierrez, G.
name: Hill, J. C.
name: Hilton, M.
name: Hincks, A. D.
name: Hinton, S. R.
name: Hollowood, D. L.
name: Honscheid, K.
name: Hoyle, B.
name: Huang, Z.
name: Hughes, J. P.
name: Huterer, D.
name: Jain, B.
name: James, D. J.
name: Jeltema, T.
name: Kuehn, K.
name: Lima, M.
name: Maia, M. A. G.
name: Marshall, J. L.
name: McMahon, J.
name: Melchior, P.
name: Menanteau, F.
name: Miquel, R.
name: Mohr, J. J.
name: Moodley, K.
name: Morgan, R.
name: Nati, F.
name: Page, L.
name: Ogando, R. L. C.
name: Palmese, A.
name: Chinchón, F. Paz
name: Malagón, A. A. Plazas
name: Pieres, A.
name: Romer, A. K.
name: Rozo, E.
name: Sanchez, E.
name: Scarpine, V.
name: Schillaci, A.
name: Schubnell, M.
name: Serrano, S.
name: Sevilla-Noarbe, I.
name: Sheldon, E.
name: Shin, T.
name: Sifón, C.
name: Smith, M.
name: Soares-Santos, M.
name: Suchyta, E.
name: Swanson, M. E. C.
name: Tarle, G.
name: Thomas, D.
name: Tucker, D. L.
name: Varga, T. N.
name: Weller, J.
name: Wechsler, R. H.
name: Wilkinson, R. D.
name: Wollack, E. J.
name: Xu, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The cosmic web contains filamentary structure on a wide range of scales. On the largest scales, superclustering aligns multiple galaxy clusters along inter-cluster bridges, visible through their thermal Sunyaev-Zel'dovich signal in the Cosmic Microwave Background. We demonstrate a new, flexible method to analyze the hot gas signal from multi-scale extended structures. We use a Compton-$y$ map from the Atacama Cosmology Telescope (ACT) stacked on redMaPPer cluster positions from the optical Dark Energy Survey (DES). Cutout images from the $y$ map are oriented with large-scale structure information from DES galaxy data such that the superclustering signal is aligned before being overlaid. We find evidence for an extended quadrupole moment of the stacked $y$ signal at the 3.5$σ$ level, demonstrating that the large-scale thermal energy surrounding galaxy clusters is anisotropically distributed. We compare our ACT$\times$DES results with the Buzzard simulations, finding broad agreement. Using simulations, we highlight the promise of this novel technique for constraining the evolution of anisotropic, non-Gaussian structure using future combinations of microwave and optical surveys.
description: 37 pages, 23 figures, 4 tables. Added explanatory figure, table, covariance matrix equations, discussion of CIB impact. Matches the version published in ApJ