skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Bounds on dark matter in solar orbit

Abstract

The possibility is considered that a spherical distribution of dark matter (DM), matter not visible with current instruments, is trapped in the sun's gravitational field. Bounds are placed from the motion of Uranus and Neptune, on the amount of DM that could be so trapped within the radius of those planets' orbits, as follows: from the Voyager 2, Uranus-flyby data new, more accurate ephemeris values are generated. Trapped DM mass is bounded by noting that such a distribution would increase the effective mass of the sun as seen by the outer planets and by using the new ephemeris values to bound such an increase. 34 refs.

Authors:
; ; ; ;  [1];  [2];  [3]
  1. (California Institute of Technology, Pasadena (USA)
  2. (USA)
  3. (USA))
Publication Date:
OSTI Identifier:
5398250
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; (USA); Journal Volume: 342
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SOLAR SYSTEM; NONLUMINOUS MATTER; GRAVITATIONAL FIELDS; NEPTUNE PLANET; ORBITS; SPATIAL DISTRIBUTION; URANUS PLANET; VOYAGER SPACE PROBES; DISTRIBUTION; PLANETS; SPACE VEHICLES; VEHICLES; 640104* - Astrophysics & Cosmology- Solar Phenomena

Citation Formats

Anderson, J.D., Lau, E.L., Taylor, A.H., Dicus, D.A., Teplitz, D.C., Texas Univ., Austin, and Maryland Univ., College Park. Bounds on dark matter in solar orbit. United States: N. p., 1989. Web. doi:10.1086/167614.
Anderson, J.D., Lau, E.L., Taylor, A.H., Dicus, D.A., Teplitz, D.C., Texas Univ., Austin, & Maryland Univ., College Park. Bounds on dark matter in solar orbit. United States. doi:10.1086/167614.
Anderson, J.D., Lau, E.L., Taylor, A.H., Dicus, D.A., Teplitz, D.C., Texas Univ., Austin, and Maryland Univ., College Park. 1989. "Bounds on dark matter in solar orbit". United States. doi:10.1086/167614.
@article{osti_5398250,
title = {Bounds on dark matter in solar orbit},
author = {Anderson, J.D. and Lau, E.L. and Taylor, A.H. and Dicus, D.A. and Teplitz, D.C. and Texas Univ., Austin and Maryland Univ., College Park},
abstractNote = {The possibility is considered that a spherical distribution of dark matter (DM), matter not visible with current instruments, is trapped in the sun's gravitational field. Bounds are placed from the motion of Uranus and Neptune, on the amount of DM that could be so trapped within the radius of those planets' orbits, as follows: from the Voyager 2, Uranus-flyby data new, more accurate ephemeris values are generated. Trapped DM mass is bounded by noting that such a distribution would increase the effective mass of the sun as seen by the outer planets and by using the new ephemeris values to bound such an increase. 34 refs.},
doi = {10.1086/167614},
journal = {Astrophysical Journal; (USA)},
number = ,
volume = 342,
place = {United States},
year = 1989,
month = 7
}
  • Bounds are derived on the cross section, flux, and energy density of new particles that may be responsible for the atmospheric neutrino anomaly: 4.6{times}10{sup {minus}45}cm {sup 2}{lt}{sigma}{lt}2.4{times}10{sup {minus}34} cm{sup 2 }. The decay of primordial homogeneous dark matter can be excluded. {copyright} {ital 1997} {ital The American Physical Society}
  • From considering the effect of {gamma} -{gamma} interactions on recently observed TeV gamma-ray spectra, improved limits are set to the density of extragalactic infrared photons which are robust and essentially model independent. The resulting limits are more than an order of magnitude more restrictive than direct observations in the 0.025{endash}0.3 eV regime. These limits are used to improve constraints on radiative neutrino decay in the mass range above 0.05 eV and to rule out very massive objects as providing the dark matter needed to explain galaxy rotation curves. Lower bounds on the maximum distance which TeV gamma rays may probemore » are also derived. {copyright} {ital 1998} {ital The American Physical Society}« less
  • We study constraints on models with a flat 'Universal' Extra Dimension in which all Standard Model fields propagate in the bulk. A significantly improved constraint on the compactification scale is obtained from the extended set of electroweak precision observables accurately measured at LEP1 and LEP2. We find a lower bound of M{sub c} = R{sup -1} > 700 (800) GeV at the 99% (95%) confidence level. We also discuss the implications of this constraint on the prospects for the direct and indirect detection of Kaluza-Klein dark matter in this model.
  • We provide conservative bounds on the dark matter cross-section and lifetime from final state radiation produced by annihilation or decay into charged leptons, either directly or via an intermediate particle {phi}. Our analysis utilizes the experimental gamma-ray flux upper limits from four Milky Way dwarf satellites: HESS observations of Sagittarius and VERITAS observations of Draco, Ursa Minor, and Willman 1. Using 90% confidence level lower limits on the integrals over the dark matter distributions, we find that these constraints are largely unable to rule out dark matter annihilations or decays as an explanation of the PAMELA and ATIC/PPB-BETS excesses. However,more » if there is an additional Sommerfeld enhancement in dwarfs, which have a velocity dispersion {approx} 10 to 20 times lower than that of the local Galactic halo, then the cross-sections for dark matter annihilating through {phi}'s required to explain the excesses are very close to the cross-section upper bounds from Willman 1. Dark matter annihilation directly into {tau}'s is also marginally ruled out by Willman 1 as an explanation of the excesses, and the required cross-section is only a factor of a few below the upper bound from Draco. Finally, we make predictions for the gamma-ray flux expected from the dwarf galaxy Segue 1 for the Fermi Gamma-ray Space Telescope. We find that for a sizeable fraction of the parameter space in which dark matter annihilation into charged leptons explains the PAMELA excess, Fermi has good prospects for detecting a gamma-ray signal from Segue 1 after one year of observation.« less
  • We investigate scenarios in which dark matter interacts with the Standard Model primarily through electroweak gauge bosons. We employ an effective field theory framework wherein the Standard Model and the dark matter particle are the only light states in order to derive model-independent bounds. Bounds on such interactions are derived from dark matter production by weak boson fusion at the LHC, indirect detection searches for the products of dark matter annihilation and from the measured invisible width of the Z 0 . We find that limits on the UV scale, Λ , reach weak scale values for most operatorsmore » and values of the dark matter mass, thus probing the most natural scenarios in the weakly interacting massive particle dark matter paradigm. Our bounds suggest that light dark matter ( m χ ≲ m Z / 2 or m χ ≲ 100 – 200 GeV , depending on the operator) cannot interact only with the electroweak gauge bosons of the Standard Model, but rather requires additional operator contributions or dark sector structure to avoid overclosing the Universe.« less