Constraints on Dark Matter Properties from Observations of Milky Way Satellite Galaxies

Nadler, Ethan O.; Drlica-Wagner, A.; Bechtol, K.; Mau, S.; Wechsler, Risa H.; Gluscevic, Vera; Boddy, Kimberly K.; Pace, Andrew B.; Li, T. S.; McNanna, M.; Riley, A. H.; García-Bellido, J.; Mao, Yao-Yuan; Green, G.; Burke, D. L.; Peter, Annika H. G.; Jain, Bhuvnesh; Abbott, T. M. C.; Aguena, M.; Allam, S.; Annis, J.; Ávila, S.; Brooks, D.; Kind, M. Carrasco; Carretero, J.; Costanzi, M.; Costa, L. N. da; Vicente, J. De; Desai, S.; Diehl, H. T.; Doel, P.; Everett, S.; Evrard, A. E.; Flaugher, B.; Frieman, Joshua A.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutiérrez, G.; Hinton, S. R.; Honscheid, K.; Huterer, Dragan; James, D. J.; Krause, E.; Kuêhn, K.; Kuropatkin, N.; Lahav, O.; Maia, M. A. G.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Palmese, A.; Paz-Chinchón, F.; Plazas, A. A.; Romer, A. K.; Sánchez, E.; Scarpine, V.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Swanson, M. E. C.; Tarlè, G.; Tucker, D. L.; Walker, A. R.; Wester, W.

doi:10.1103/physrevlett.126.091101

Cited by 254 publications

(240 citation statements)

References 100 publications

(171 reference statements)

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“…Since satellite galaxies are inferred to live within subhaloes, with their respective properties related via the galaxy-halo connection, DM substructure statistics are intimately connected to satellite galaxy abundances (e.g. Vale & Ostriker 2006;Behroozi, Wechsler & Conroy 2013;Hearin et al 2013;Newton et al 2018;Nadler et al 2019Nadler et al , 2020Nadler et al , 2021 and thus can be used to constrain cosmology through their impact on small-scale clustering statistics (e.g. Benson et al 2001;Berlind et al 2003;van den Bosch et al 2005a;Lange et al 2019;.…”

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confidence: 99%

The tidal evolution of dark matter substructure – II. The impact of artificial disruption on subhalo mass functions and radial profiles

Green

Bosch

Jiang

2021

Monthly Notices of the Royal Astronomical Society

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Several recent studies have indicated that artificial subhalo disruption (the spontaneous, non-physical disintegration of a subhalo) remains prevalent in state-of-the-art dark matter-only cosmological simulations. In order to quantify the impact of disruption on the inferred subhalo demographics, we augment the semi-analytical SatGen dynamical subhalo evolution model with an improved treatment of tidal stripping that is calibrated using the DASH database of idealized high-resolution simulations of subhalo evolution, which are free from artificial disruption. We also develop a model of artificial disruption that reproduces the statistical properties of disruption in the Bolshoi simulation. Using this framework, we predict subhalo mass functions (SHMFs), number density profiles, and substructure mass fractions and study how these quantities are impacted by artificial disruption and mass resolution limits. We find that artificial disruption affects these quantities at the $10-20\%$ level, ameliorating previous concerns that it may suppress the SHMF by as much as a factor of two. We demonstrate that semi-analytical substructure modeling must include orbit integration in order to properly account for splashback haloes, which make up roughly half of the subhalo population. We show that the resolution limit of N-body simulations, rather than artificial disruption, is the primary cause of the radial bias in subhalo number density found in dark matter-only simulations. Hence, we conclude that the mass resolution remains the primary limitation of using such simulations to study subhaloes. Our model provides a fast, flexible, and accurate alternative to studying substructure statistics in the absence of both numerical resolution limits and artificial disruption.

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mentioning

confidence: 99%

The tidal evolution of dark matter substructure – II. The impact of artificial disruption on subhalo mass functions and radial profiles

Green

Bosch

Jiang

2021

Monthly Notices of the Royal Astronomical Society

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“…In the context of the νMSM it is impossible to explain all of the observed DM in the region marked "DM under production" because of the big bang nucleosynthesis bound on the lepton chemical potential [30][31][32]. Note that the νMSM also predicts that the DM becomes increasingly warm for decreasing m χ , which leads to tension with Milky Way satellite galaxy counts for low m χ : data from the Dark Energy Survey and other Galactic satellite surveys [80] constrain m χ greater than ∼15-20 keV in the νMSM [81] (which can be strengthened further when combined with strong lensing measurements [82]), though we note that our results apply to more general DM production mechanisms that do not predict modifications to small-scale structure. In Fig.…”

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confidence: 99%

Deep Search for Decaying Dark Matter with XMM-Newton Blank-Sky Observations

Foster

Kongsore²,

Dessert³

et al. 2021

Phys. Rev. Lett.

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“…If the age and size of its prominent star cluster is also taken into account, the range 8 × 10 −22 eV/c 2 ≲ m ≲ 10 −19 eV/c 2 is disfavoured, in addition. Similar bounds of m ≳ 2.9 × 10 −21 eV/c 2 follow from the study by (Nadler et al, 2021), which also imposes the requirement of matching subhalo mass functions to the Milky Way satellite population, including ultrafaint dwarfs. Moreover (Safarzadeh and Spergel, 2020), consider the competing demands from different dwarf galaxy populations, excluding masses smaller than 6 × 10 −22 eV/c 2 .…”

Section: Introductionmentioning

confidence: 53%

“…The results by(Marsh and Niemeyer, 2019) and(Nadler et al, 2021) suggest that our fiducial choice is already ruled out, but detailed contraints of factors of a few are not so decisive for the general arguments made here.17 It is just that the Jeans scale of CDM is much smaller; the smallest CDM subhalos form near the thermal cutoff scale of density perturbations via monolithic collapse, while bigger halos have experienced mergers subsequently.Frontiers in Astronomy and Space Sciences | www.frontiersin.org July 2021 | Volume 8 | Article 697140…”

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confidence: 84%

To Observe, or Not to Observe, Quantum-Coherent Dark Matter in the Milky Way, That is a Question

Rindler-Daller

2021

Front. Astron. Space Sci.

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In recent years, Bose-Einstein-condensed dark matter (BEC-DM) has become a popular alternative to standard, collisionless cold dark matter (CDM). This BEC-DM -also called scalar field dark matter (SFDM)- can suppress structure formation and thereby resolve the small-scale crisis of CDM for a range of boson masses. However, these same boson masses also entail implications for BEC-DM substructure within galaxies, especially within our own Milky Way. Observational signature effects of BEC-DM substructure depend upon its unique quantum-mechanical features and have the potential to reveal its presence. Ongoing efforts to determine the dark matter substructure in our Milky Way will continue and expand considerably over the next years. In this contribution, we will discuss some of the existing constraints and potentially new ones with respect to the impact of BEC-DM onto baryonic tracers. Studying dark matter substructure in our Milky Way will soon resolve the question, whether dark matter behaves classical or quantum on scales of ≲ 1 kpc.

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Constraints on Dark Matter Properties from Observations of Milky Way Satellite Galaxies

Cited by 254 publications

References 100 publications

The tidal evolution of dark matter substructure – II. The impact of artificial disruption on subhalo mass functions and radial profiles

The tidal evolution of dark matter substructure – II. The impact of artificial disruption on subhalo mass functions and radial profiles

Deep Search for Decaying Dark Matter with XMM-Newton Blank-Sky Observations

To Observe, or Not to Observe, Quantum-Coherent Dark Matter in the Milky Way, That is a Question

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