New cosmological constraints on primordial black holes

Carr, B. J.; Kohri, Kazunori; Sendouda, Yuuiti; Yokoyama, Jun′ichi

doi:10.1103/physrevd.81.104019

Cited by 1,114 publications

(1,777 citation statements)

References 283 publications

(496 reference statements)

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“…Also shown are the upper limits set by the pulsar timing array experiments EPTA, NANOGrav, and PPTA, as well as the projected SKA sensitivity. fraction β(M ) ∼ 10 −7 , which gives the fraction of dark matter in PBHs f (M ) ∼ 0.1 [10,15]. Near the end of inflation the power spectrum shows high spikes where PBHs of much smaller masses are likely to be copiously formed as well.…”

Section: Jhep02(2017)008mentioning

confidence: 99%

Production of high stellar-mass primordial black holes in trapped inflation

Cheng

Lee

2017

J. High Energ. Phys.

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Trapped inflation has been proposed to provide a successful inflation with a steep potential. We discuss the formation of primordial black holes in the trapped inflationary scenario. We show that primordial black holes are naturally produced during inflation with a steep trapping potential. In particular, we have given a recipe for an inflaton potential with which particle production can induce large non-Gaussian curvature perturbation that leads to the formation of high stellar-mass primordial black holes. These primordial black holes could be dark matter observed by the LIGO detectors through a binary black-hole merger. At the end, we have given an attempt to realize the required inflaton potential in the axion monodromy inflation, and discussed the gravitational waves sourced by the particle production.

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Section: Jhep02(2017)008mentioning

confidence: 99%

Production of high stellar-mass primordial black holes in trapped inflation

Cheng

Lee

2017

J. High Energ. Phys.

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“…Chemical potential µ-type distortions (Sunyaev & Zeldovich 1970b) can be generated by many forms of energy release at redshifts 5 × 10 4 z 2 × 10 6 , including decaying or annihilating particles (e.g., Sarkar & Cooper 1984;Hu & Silk 1993b;McDonald et al 2001;Chluba 2013a), the damping of small-scale density fluctuations (e.g., Sunyaev & Zeldovich 1970a;Daly 1991;Barrow & Coles 1991;Chluba et al 2012b), and injection from cosmic strings (Ostriker & Thompson 1987;Tashiro et al 2012Tashiro et al , 2013 or primordial black holes (Carr et al 2010;AliHaïmoud & Kamionkowski 2016). A negative µ distortion is also generated by the Compton-cooling of CMB photons off the adiabatically evolving electrons (Chluba 2005;Chluba & Sunyaev 2012).…”

Section: Cmb Spectral Distortion Modelingmentioning

confidence: 99%

Prospects for measuring cosmic microwave background spectral distortions in the presence of foregrounds

Abitbol

Chluba

Hill

et al. 2017

Monthly Notices of the Royal Astronomical Society

146

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Measurements of cosmic microwave background spectral distortions have profound implications for our understanding of physical processes taking place over a vast window in cosmological history. Foreground contamination is unavoidable in such measurements and detailed signal-foreground separation will be necessary to extract cosmological science. In this paper, we present MCMC-based spectral distortion detection forecasts in the presence of Galactic and extragalactic foregrounds for a range of possible experimental configurations, focusing on the Primordial Inflation Explorer (PIXIE) as a fiducial concept. We consider modifications to the baseline PIXIE mission (operating 12 months in distortion mode), searching for optimal configurations using a Fisher approach. Using only spectral information, we forecast an extended PIXIE mission to detect the expected average non-relativistic and relativistic thermal Sunyaev-Zeldovich distortions at high significance (194σ and 11σ, respectively), even in the presence of foregrounds. The ΛCDM Silk damping µ-type distortion is not detected without additional modifications of the instrument or external data. Galactic synchrotron radiation is the most problematic source of contamination in this respect, an issue that could be mitigated by combining PIXIE data with future ground-based observations at low frequencies (ν 15 − 30 GHz). Assuming moderate external information on the synchrotron spectrum, we project an upper limit of |µ| < 3.6 × 10 −7 (95% c.l.), slightly more than one order of magnitude above the fiducial ΛCDM signal from the damping of small-scale primordial fluctuations, but a factor of 250 improvement over the current upper limit from COBE/FIRAS. This limit could be further reduced to |µ| < 9.4 × 10 −8 (95% c.l.) with more optimistic assumptions about extra low-frequency information and would rule out many alternative inflation models as well as provide new constraints on decaying particle scenarios.

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“…Though this class of DM candidate has taken a back seat to the notion that DM is a new elementary particle [4][5][6][7][8], the idea of PBH dark matter was recently rekindled [9,10], following the first detection of two merging ∼ 30 M black holes by LIGO [11]. Given the increasingly constraining null searches for particle DM, PBHs and their observational consequences are worth reconsidering [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…[12,13]). To cite only a few constraints, null microlensing searches exclude compact objects with masses 10 M [14,15], and widebinary surveys exclude those with masses 10 2 M [16,17].…”

Section: Introductionmentioning

confidence: 99%

Cosmic microwave background limits on accreting primordial black holes

2017

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Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO's first direct detection of a binary-black-hole merger. Here we revisit the effect of accreting PBHs on the cosmic microwave background (CMB) frequency spectrum and angular temperature/polarization power spectra. We compute the accretion rate and luminosity of PBHs, accounting for their suppression by Compton drag and Compton cooling by CMB photons. We estimate the gas temperature near the Schwarzschild radius, and hence the free-free luminosity, accounting for the cooling resulting from collisional ionization when the background gas is mostly neutral. We account approximately for the velocities of PBHs with respect to the background gas. We provide a simple analytic estimate of the efficiency of energy deposition in the plasma. We find that the spectral distortions generated by accreting PBHs are too small to be detected by FIRAS, as well as by future experiments now being considered. We analyze Planck CMB temperature and polarization data and find, under our most conservative hypotheses, and at the order-of-magnitude level, that they rule out PBHs with masses 10 2 M as the dominant component of dark matter.

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New cosmological constraints on primordial black holes

Cited by 1,114 publications

References 283 publications

Production of high stellar-mass primordial black holes in trapped inflation

Production of high stellar-mass primordial black holes in trapped inflation

Prospects for measuring cosmic microwave background spectral distortions in the presence of foregrounds

Cosmic microwave background limits on accreting primordial black holes

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