We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be ...We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be provided by, for example, experts on information theory （as we are）. Our previous efforts in this direction led to a fascinating result： the theoretical total mass ofa spacetime in which Planck＇s length is an observer-independent scale of length is equal （both in expression and value） to the mass of our portion of Universe measured by national aeronautics and space administration wilkinson microwave anisotropy probe （NASA WMAP） spacecraft. In the following paragraphs we＇ll show how granularity （i.e., discontinuity） of physical entities of our portion of observable spacetime descends directly from the principles of information theory, and how a physical theory about the discontinuity of reality built on these basis can lead to an elegant descriptions of both microcosm and macrocosm.展开更多
A remarkable inconsistency between the calibrated differential time-ordered data (TOD) of the Wilkinson Microwave Anisotropy Probe (WMAP) mission,which is the input for map-making,and the cosmic microwave background (...A remarkable inconsistency between the calibrated differential time-ordered data (TOD) of the Wilkinson Microwave Anisotropy Probe (WMAP) mission,which is the input for map-making,and the cosmic microwave background (CMB) temperature maps published by the WMAP team is revealed,indicating that there must exist a serious problem in the map making routine of the WMAP team.This inconsistency is easy to be confirmed without the use of WMAP map-making software.In view of the importance of this issue for cosmology study,we invite readers to check it by themselves.展开更多
We have discovered in our previous work that different observational systematics,e.g.errors from antenna pointing directions or an asynchronism between the attitude and science data may generate a pseudo-dipole signal...We have discovered in our previous work that different observational systematics,e.g.errors from antenna pointing directions or an asynchronism between the attitude and science data may generate a pseudo-dipole signal in the full-sky maps of the cosmic microwave background (CMB) anisotropy that have been published by the Wilkinson Microwave Anisotropy Probe (WMAP) team.We have found that the antenna sidelobe response to the Doppler signal produces a similar effect.In this work,independent from the sources,we have uniformly modeled the pseudo-dipole signal and have removed it from the published WMAP7 CMB maps by model fitting.The result demonstrates that the released WMAP CMB quadrupole is almost completely artificial.展开更多
In cosmic microwave background (CMB) experiments, foreground-cleaned temperature maps are still contaminated by the residual dipole due to uncertainties of the Doppler dipole direction and microwave radiometer sidelob...In cosmic microwave background (CMB) experiments, foreground-cleaned temperature maps are still contaminated by the residual dipole due to uncertainties of the Doppler dipole direction and microwave radiometer sidelobe. To obtain reliable CMB maps, such contamination has to be carefully removed from observed data. We have previously built a software package for map-making, residual dipole-contamination removal, and power spectrum estimation from the Wilkinson Microwave Anisotropy Probe (WMAP) raw data. This software has now been significantly improved. With the improved software, we obtain a negative result of CMB quadrupole detection with the WMAP raw data, which is 3.2±3.5 K2 from the seven-year WMAP (WMAP7) data. This result is evidently incompatible with ～1000 K2 expected from the standard cosmological model ΛCDM. The completely missing of CMB quadrupole poses a serious challenge to the standard model and sets a strong constraint on possible models of cosmology. Due to the importance of this result for understanding the origin and early evolution of our universe, the software codes we used are opened for public checking.展开更多
文摘We believe that well-known principles and relationships between physical entities are the key for a deep knowledge of reality. However, they must be applied using innovative points of view, points of view that can be provided by, for example, experts on information theory （as we are）. Our previous efforts in this direction led to a fascinating result： the theoretical total mass ofa spacetime in which Planck＇s length is an observer-independent scale of length is equal （both in expression and value） to the mass of our portion of Universe measured by national aeronautics and space administration wilkinson microwave anisotropy probe （NASA WMAP） spacecraft. In the following paragraphs we＇ll show how granularity （i.e., discontinuity） of physical entities of our portion of observable spacetime descends directly from the principles of information theory, and how a physical theory about the discontinuity of reality built on these basis can lead to an elegant descriptions of both microcosm and macrocosm.
基金supported by the National Basic Research Program of China (Grant No.2009CB824800)China Postdoctoral Science Foundation (Grant No.H91I21734A)Knowledge Innovation Program of CAS (Grant No.KJCX2-YW-T03)
文摘A remarkable inconsistency between the calibrated differential time-ordered data (TOD) of the Wilkinson Microwave Anisotropy Probe (WMAP) mission,which is the input for map-making,and the cosmic microwave background (CMB) temperature maps published by the WMAP team is revealed,indicating that there must exist a serious problem in the map making routine of the WMAP team.This inconsistency is easy to be confirmed without the use of WMAP map-making software.In view of the importance of this issue for cosmology study,we invite readers to check it by themselves.
基金supported by the National Natural Science Foundation of China (11033003)National Basic Research Program of China (2009CB824800)the CAS project (KJCX2-YW-T03)
文摘We have discovered in our previous work that different observational systematics,e.g.errors from antenna pointing directions or an asynchronism between the attitude and science data may generate a pseudo-dipole signal in the full-sky maps of the cosmic microwave background (CMB) anisotropy that have been published by the Wilkinson Microwave Anisotropy Probe (WMAP) team.We have found that the antenna sidelobe response to the Doppler signal produces a similar effect.In this work,independent from the sources,we have uniformly modeled the pseudo-dipole signal and have removed it from the published WMAP7 CMB maps by model fitting.The result demonstrates that the released WMAP CMB quadrupole is almost completely artificial.
基金supported by the National Basic Research Program of China(2009CB824800)the National Natural Science Foundation of China(11033003)+1 种基金the National Natural Science Foundation for Young Scientistsof China (11203024)the Youth Innovation Promotion Association,CAS
文摘In cosmic microwave background (CMB) experiments, foreground-cleaned temperature maps are still contaminated by the residual dipole due to uncertainties of the Doppler dipole direction and microwave radiometer sidelobe. To obtain reliable CMB maps, such contamination has to be carefully removed from observed data. We have previously built a software package for map-making, residual dipole-contamination removal, and power spectrum estimation from the Wilkinson Microwave Anisotropy Probe (WMAP) raw data. This software has now been significantly improved. With the improved software, we obtain a negative result of CMB quadrupole detection with the WMAP raw data, which is 3.2±3.5 K2 from the seven-year WMAP (WMAP7) data. This result is evidently incompatible with ～1000 K2 expected from the standard cosmological model ΛCDM. The completely missing of CMB quadrupole poses a serious challenge to the standard model and sets a strong constraint on possible models of cosmology. Due to the importance of this result for understanding the origin and early evolution of our universe, the software codes we used are opened for public checking.
