کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10724658 | 1034031 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Testing the interaction model with cosmological data and gamma-ray bursts
ترجمه فارسی عنوان
تست مدل تعامل با داده های کیهان شناسی و انفجار گاما
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کلمات کلیدی
انرژی تاریک تعامل، پارگی گاما، مشاهدات کیهانشناسی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
چکیده انگلیسی
We use the new gamma-ray bursts (GRBs) data, combined with the baryon acoustic oscillation (BAO) observation from the spectroscopic Sloan digital sky survey (SDSS) data release, the newly obtained A parameter at z=0.6 from the WiggleZ dark energy survey, the cosmic microwave background (CMB) observations from the 7-year Wilkinson microwave anisotropy probe (WMAP7) results, and the type Ia supernovae (SNeIa) from Union2 set, to constrain a phenomenological model describing possible interactions between dark energy and dark matter, which was proposed to alleviate the coincidence problem of the standard ÎCDM model. By using the Markov chain Monte Carlo (MCMC) method, we obtain the marginalized 1Ï constraints Ωm=0.2886±0.0135, rm=â0.0047±0.0046, and wX=â1.0658±0.0564. We also consider other combinations of these data for comparison. These results show that: (1) the energy of dark matter is slightly transferring to that of dark energy; (2) even though the GRBs + BAO + CMB data present less stringent constraints than SNe + BAO + CMB data do, the GRBs can help eliminate the degeneracies among parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 718, Issue 3, 8 January 2013, Pages 699-703
Journal: Physics Letters B - Volume 718, Issue 3, 8 January 2013, Pages 699-703
نویسندگان
Yu Pan, Shuo Cao, Yungui Gong, Kai Liao, Zong-Hong Zhu,