Article
Astronomy & Astrophysics
Emil Brinch Holm, Thomas Tram, Steen Hannestad
Summary: Decaying dark matter models can impact the predicted value of the Hubble constant and bridge the discrepancies between CMB inferences and local measurements. In this study, a reevaluation of the warm dark matter decaying model is performed, including the mass of the decaying species, and its ability to alleviate tensions in Hubble and sigma(8) is assessed. The model shows mild improvements but further research is required to fully evaluate its effectiveness.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Gonzalo Alonso-Alvarez, James M. Cline
Summary: Sterile neutrinos that mix with active neutrinos are considered as interesting dark matter candidates, with their production being constrained by structure formation observations and X-ray searches. Resonant oscillations between active and sterile neutrinos can occur in the early universe if active neutrinos couple to an oscillating condensate of a very light gauge field, allowing sterile neutrinos to potentially make up all of the dark matter while respecting X-ray constraints. These deviations from standard neutrino oscillations could still be present today.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
G. Parimbelli, G. Scelfo, S. K. Giri, A. Schneider, M. Archidiacono, S. Camera, M. Viel
Summary: This study investigates the impact of mixed dark matter models on large-scale structure observables and builds an emulator to predict the suppression in the matter power spectrum with high precision.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Arnab Paul, Arindam Chatterjee, Anish Ghoshal, Supratik Pal
Summary: The study explores the interaction between dark matter and neutrinos in Lambda CDM cosmology, using the Planck 2018 dataset to constrain these processes. A viable particle dark matter model with dark matter-neutrino interaction is discussed, and the constraints obtained are mapped to the parameter space of the model.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
G. Parimbelli, C. Carbone, J. Bel, B. Bose, M. Calabrese, E. Carella, M. Zennaro
Summary: This article provides an accurate comparison of different methodologies for modeling the nonlinear matter power spectra in the presence of massive neutrinos and dynamical dark energy. The results show that HMcode and ReACT perform better than HALOFIT, while EuclidEmulator2 agrees remarkably well with the simulated spectra in some scenarios. This study highlights the importance of selecting appropriate methods when modeling complex cosmological scenarios.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
G. Pordeus-da-Silva, R. C. Batista, L. G. Medeiros
Summary: Using the Reduced Relativistic Gas (RRG) model, the matter power spectrum for Warm Dark Matter (WDM) on small scales is analytically determined, showing that higher order multipoles are negligible under certain conditions. By deriving a Meszaros-like equation and combining solutions from different eras, an expression for WDM perturbations as a function of redshift and wavenumber is obtained, leading to consistent results with observations and measurements of dark matter warmness.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Carlos Chichiri, Graciela B. Gelmini, Philip Lu, Volodymyr Takhistov
Summary: This study assesses the impact of early Universe pre-BBN cosmology on the mixing range of keV-mass sterile neutrino dark matter, and finds that the uncertainties in early Universe cosmology significantly expand the allowed parameter space for sterile neutrinos that can constitute the whole of the dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Guo-yuan Huang, Newton Nath
Summary: This study explores the neutrinoless double beta decay induced by an ultralight dark matter field coupled to neutrinos. The coupling violates lepton number and directly drives the AL=2 transition without suppressing small neutrino masses. However, this coupling is likely to alter the standard cosmological results in the early Universe, and the parameter space is severely constrained, making it difficult for future experiments to detect any signal even with a meV sensitivity to the effective neutrino mass.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Wonsub Cho, Ki-Young Choi, Hee Jung Kim
Summary: We studied the impact of the interaction between dark matter and the cosmic neutrino background on the evolution of galactic dark matter halos. We found that energy transfer from the cosmic background neutrinos can heat the center of the galaxy and lead to core formation. For small galaxies, such as satellite galaxies of the Milky Way, core formation is particularly efficient. We were able to put a conservative constraint on the non-relativistic elastic scattering cross section.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Anirban Das, Subinoy Das, Shiv K. Sethi
Summary: This paper studies the cosmological signatures of mass-varying dark matter, where its mass changes from zero to a nonzero value. The changes in various observables are calculated, and a qualitative similarity between this model and warm dark matter cosmology is pointed out.
Article
Astronomy & Astrophysics
Lea Fuss, Mathias Garny
Summary: Investigated the impact of the Decaying Cold Dark Matter (DCDM) model on the tension between cosmic microwave background (CMB) and large-scale structure measurements. Found that the Lyman-alpha forest data is compatible with the DCDM model and can provide improved constraints under certain parameter values.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Markus R. Mosbech, Celine Boehm, Yvonne Y. Y. Wong
Summary: Similar to warm dark matter, many interacting dark matter models predict a suppression of the matter power spectrum due to collisional damping. 21cm line intensity mapping can probe this suppression and set strong limits on dark matter-neutrino scattering. However, precise measurements of the matter power spectrum at high redshifts are needed to distinguish between warm dark matter and interacting scenarios.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Xiaohan Wu, Julian B. Munoz, Daniel Eisenstein
Summary: We propose a non-parametric halo biasing model that can accurately represent the ratio of halo and mass densities. Our model shows a monotonically increasing halo-to-mass ratio with linear overdensity in the initial Lagrangian space, while the traditional perturbative halo bias model does not guarantee non-negativity of the halo counts. We demonstrate that our non-parametric model can recover the halo power spectra to sub-percent level accuracy for certain halo masses when given a proper smoothing scale to filter the initial density field. However, the recovery of the halo power spectrum is mildly dependent on the smoothing scale and other input parameters. Our findings qualitatively agree with intuitions from extended Press-Schechter theory.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Alejandro Aviles, Arka Banerjee, Gustavo Niz, Zachary Slepian
Summary: An Eulerian Perturbation Theory is introduced to study the clustering of tracers in cosmologies with massive neutrinos, incorporating Effective Field Theory counterterms, IR-resummations, and biasing scheme for one-loop redshift-space power spectrum calculation. Comparisons with synthetic halo catalogues show good agreement on scales up to 0.25 h Mpc(-1), but higher wave-numbers lead to inaccurate estimation of the linear bias parameter. An accurate approximation method is derived to reduce computational cost for loop corrections and accelerate calculations with FFTLoG methods.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Kyrylo Bondarenko, Alexey Boyarsky, Marco Nikolic, Josef Pradler, Anastasia Sokolenko
Summary: This study examines the potential for detection when the mass of dark matter is below the electron-volt scale, and explores the impact of dark matter decay on the cosmic neutrino background. The results suggest that the future PTOLEMY experiment may have the capability to discover dark matter decay, enhancing our understanding of this additional form of dark radiation.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Alejandro Aviles, Georgios Valogiannis, Mario A. Rodriguez-Meza, Jorge L. Cervantes-Cota, Baojiu Li, Rachel Bean
Summary: A framework for computing the redshift space power spectrum in generalized cosmologies with kernels beyond EdS has been developed. The model, which includes effective field theory counterterms and IR resummation, is shown to be accurate up to k = 0.27 Mpc^{-1} h at z = 0.5. Comparisons with N-body simulations suggest the model's accuracy and potential for testing deviations from ACDM using real data from future cosmological surveys.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Oliver H. E. Philcox, Alejandro Aviles, Elena Massara
Summary: The study presents one-loop perturbation theory for the power spectrum of the marked density field of matter and biased tracers in real- and redshift-space. The inclusion of one-loop Effective Field Theory terms substantially improves accuracy, with 5% accuracy at z = 1. The theory suggests a reorganization to include all relevant terms for large scales, leading to a sub-percent accurate model with the inclusion of free coefficients.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Arka Banerjee, Tom Abel
Summary: Cross-correlations between data sets are important in cosmological analyses, and k-nearest neighbour cumulative distribution functions have been shown to be sensitive probes of such clustering. This paper extends the framework of NN measurements to describe joint distributions and correlations between two data sets. The measurements of joint kNN-CDFs are sensitive to all possible connected N-point functions and can isolate cross-correlations by combining measurements from individual data sets.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Ethan O. Nadler, Arka Banerjee, Susmita Adhikari, Yao-Yuan Mao, Risa H. Wechsler
Summary: This study compares the effects of self-interacting dark matter (SIDM), warm dark matter (WDM), and the Galactic disk on subhalos in Milky Way (MW) systems with realistic Large Magellanic Cloud (LMC) analogs. The results show that SIDM and WDM can produce similar mass-dependent suppression, while disk disruption is mass independent. Subhalos in the inner regions of the MW are preferentially disrupted by both self-interactions and the disk, indicating different effects on subhalos in different locations.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Astronomy & Astrophysics
Alejandro Aviles, Arka Banerjee, Gustavo Niz, Zachary Slepian
Summary: An Eulerian Perturbation Theory is introduced to study the clustering of tracers in cosmologies with massive neutrinos, incorporating Effective Field Theory counterterms, IR-resummations, and biasing scheme for one-loop redshift-space power spectrum calculation. Comparisons with synthetic halo catalogues show good agreement on scales up to 0.25 h Mpc(-1), but higher wave-numbers lead to inaccurate estimation of the linear bias parameter. An accurate approximation method is derived to reduce computational cost for loop corrections and accelerate calculations with FFTLoG methods.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Arka Banerjee, Nickolas Kokron, Tom Abel
Summary: This study investigates the application of hybrid effective field theory (HEFT) in the modelling of k-nearest neighbour cumulative distribution functions (kNN-CDFs) of biased tracers of the cosmological matter field. The formalism is developed to predict the kNN-CDFs of discrete tracers from the statistics of the continuous field itself. The results show that both the two-point clustering and the kNN-CDFs can be well-fit on quasi-linear scales using the second-order HEFT formalism, and including kNN-CDF measurements can significantly improve the constraints on sigma(8).
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Souradip Bhattacharyya, Susmita Adhikari, Arka Banerjee, Surhud More, Amit Kumar, Ethan O. Nadler, Suchetana Chatterjee
Summary: The abundance, distribution, and inner structure of satellites of galaxy clusters can provide sensitive probes of dark matter properties. Simulations with self-interacting dark matter (SIDM) show a suppression in the abundance of survived subhalos compared to cold dark matter (CDM). Taking into account the disrupted subhalos, which may host orphan galaxies, reconciles the satellite galaxy populations in CDM and SIDM models, but the inner structures of subhalos still differ significantly. The feasibility of using weak-lensing signal from subhalo density profiles to distinguish between CDM and SIDM is studied, considering the contribution of orphan galaxies.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Arka Banerjee, Subinoy Das, Anshuman Maharana, Ravi Kumar Sharma
Summary: This paper focuses on the effects of Light Massive Relics (LiMRs) on smaller, nonlinear scales using cosmological N-body simulations. The study finds that LiMRs have distinct effects on small scales compared to the ΛCDM universe, even when the value of sigma(8) is matched between the models. Weak lensing measurements around massive clusters between 0.1 h(-1)Mpc and 10 h(-1)Mpc can be used to distinguish between ΛCDM and LiMR models. Additionally, different LiMR cosmologies can be distinguished by non-linear probes if their velocity distributions are sufficiently different.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Yunchong Wang, Arka Banerjee, Tom Abel
Summary: This study presents the first application of kNN summary statistics to observational clustering measurement and finds that kNN distances deviate significantly from random points, indicating a robust signature of clustering. In addition, the kNN method captures a more significant clustering signal compared to the two-point correlation function. The study also shows that the clustering signal in redMaPPer clusters is non-Gaussian. Therefore, kNN serves as a more sensitive probe of clustering, providing a novel approach for cosmology and galaxy-halo connection.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Arka Banerjee, Tom Abel
Summary: In astronomy and cosmology, efforts are made to understand the relationships between discrete point data sets and continuous fields. The k-nearest neighbour (kNN) formalism has been introduced as a method to better characterize clustering in point data sets. This method is more effective in detecting cross-correlations compared to traditional two-point methods, especially when dealing with noisy continuous fields. The statistical power of detecting cross-correlations using this method has been greatly improved, making it a promising tool for cosmological applications.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ethan O. Nadler, Philip Mansfield, Yunchong Wang, Xiaolong Du, Susmita Adhikari, Arka Banerjee, Andrew Benson, Elise Darragh-Ford, Yao-Yuan Mao, Sebastian Wagner-Carena, Risa H. Wechsler, Hao-Yi Wu
Summary: We present Symphony, a compilation of 262 cosmological, cold-dark-matter-only zoom-in simulations spanning four decades of host halo mass, from 10^11-10^15 M-?. Subhalo abundances are 50% higher in clusters than in lower-mass hosts at fixed sub-to-host halo mass ratios. The radial distributions of subhalos are approximately self-similar as a function of host mass and are less concentrated than hosts' underlying dark matter distributions.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Zhongxu Zhai, Jeremy L. Tinker, Arka Banerjee, Joseph DeRose, Hong Guo, Yao-Yuan Mao, Sean McLaughlin, Kate Storey-Fisher, Risa H. Wechsler
Summary: We analyze clustering measurements of BOSS galaxies and use a simulation-based emulator of two-point statistics. Our results show lower scaling parameters compared to Planck observations, suggesting a possible unknown systematic error in the galaxy bias model at nonlinear scales. However, we note that the BOSS data is well fit assuming general relativity (GR) and further data and modeling will enhance our understanding of the galaxy-halo connection.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
D. Anbajagane, C. Chang, A. Banerjee, T. Abel, M. Gatti, V Ajani, A. Alarcon, A. Amon, E. J. Baxter, K. Bechtol, M. R. Becker, G. M. Bernstein, A. Campos, A. Carnero Rosell, M. Carrasco Kind, R. Chen, A. Choi, C. Davis, J. Derose, H. T. Diehl, S. Dodelson, C. Doux, A. Drlica-Wagner, K. Eckert, J. Elvin-Poole, S. Everett, A. Ferte, D. Gruen, R. A. Gruendl, I Harrison, W. G. Hartley, E. M. Huff, B. Jain, M. Jarvis, N. Jeffrey, T. Kacprzak, N. Kokron, N. Kuropatkin, P-F Leget, N. Maccrann, J. Mccullough, J. Myles, A. Navarro-Alsina, S. Pandey, J. Prat, M. Raveri, R. P. Rollins, A. Roodman, E. S. Rykoff, C. Sanchez, L. F. Secco, I Sevilla-Noarbe, E. Sheldon, T. Shin, M. A. Troxel, I Tutusaus, L. Whiteway, B. Yanny, B. Yin, Y. Zhang, T. M. C. Abbott, S. Allam, M. Aguena, O. Alves, F. Andrade-Oliveira, J. Annis, D. Bacon, J. Blazek, D. Brooks, R. Cawthon, L. N. da Costa, M. E. S. Pereira, T. M. Davis, S. Desai, P. Doel, I Ferrero, J. Frieman, G. Giannini, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, O. Lahav, J. L. Marshall, J. Mena-Fernandez, F. Menanteau, R. Miquel, A. Palmese, A. Pieres, A. A. Plazas Malagon, K. Reil, E. Sanchez, M. Smith, M. E. C. Swanson, G. Tarle, P. Wiseman
Summary: Widefield surveys are important in probing clustered scalar fields, such as galaxy counts and lensing potential, which can provide insights into cosmological and astrophysical processes. The cumulative distribution function (CDF) is explored as a statistical summary of the galaxy lensing convergence field, and its constraining power is found to be modestly better than the second and third moments. Practical aspects of applying CDFs to data are investigated using the Dark Energy Survey (DES Y3) data, showing the impact of different systematics on the CDFs.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Alejandro Aviles, Gustavo Niz
Summary: The next generation of galaxy surveys will provide highly accurate measurements of the large-scale structure of the Universe, allowing for more stringent tests of gravity on cosmological scales.
Article
Astronomy & Astrophysics
Noah Glennon, Ethan O. Nadler, Nathan Musoke, Arka Banerjee, Chanda Prescod-Weinstein, Risa H. Wechsler
Summary: This study investigates the impact of self-interactions of ultralight axions on the tidal evolution of solitons. The research finds that the strength and sign of self-interactions have significant effects on the tidal disruption of solitons. There is a degeneracy between the self-interaction strength and soliton mass that determines the efficiency of tidal disruption.