Pub Date : 2019-04-30DOI: 10.22606/adap.2019.44002
G. Scharf
We study inhomogeneous perturbations away from the strongly homogeneous background cosmology previously studied. The problem is greatly simplified by using the mapping on the inner Schwarzschild solution. The resulting linear perturbation equations can be solved by power series. The solution leads to a finite energy density, but the pressure must be zero.
{"title":"Perturbation Theory in Nonstandard Cosmology","authors":"G. Scharf","doi":"10.22606/adap.2019.44002","DOIUrl":"https://doi.org/10.22606/adap.2019.44002","url":null,"abstract":"We study inhomogeneous perturbations away from the strongly homogeneous background cosmology previously studied. The problem is greatly simplified by using the mapping on the inner Schwarzschild solution. The resulting linear perturbation equations can be solved by power series. The solution leads to a finite energy density, but the pressure must be zero.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125256052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-20DOI: 10.22606/ADAP.2019.41002
B. Alexeev
{"title":"Nonlocal Theory of Ball Lightning","authors":"B. Alexeev","doi":"10.22606/ADAP.2019.41002","DOIUrl":"https://doi.org/10.22606/ADAP.2019.41002","url":null,"abstract":"","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123452600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-02-20DOI: 10.22606/adap.2019.41003
Y. Zayko
The article gives the metric of the Schwarzschild black hole, consistent with the fact that the electromagnetic vacuum is unstable under its horizon. A similar metric was previously obtained in the author's work when studying the dynamics of a vortex. This metric is characterized by the absence of many familiar concepts intrinsic to hyperbolic space-time: light-like geodesics, light cone, etc. The thermodynamic aspect of this black hole model is also considered.
{"title":"An Alternative Description of the Schwarzschild Black Hole","authors":"Y. Zayko","doi":"10.22606/adap.2019.41003","DOIUrl":"https://doi.org/10.22606/adap.2019.41003","url":null,"abstract":"The article gives the metric of the Schwarzschild black hole, consistent with the fact that the electromagnetic vacuum is unstable under its horizon. A similar metric was previously obtained in the author's work when studying the dynamics of a vortex. This metric is characterized by the absence of many familiar concepts intrinsic to hyperbolic space-time: light-like geodesics, light cone, etc. The thermodynamic aspect of this black hole model is also considered.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123392038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.22606/ADAP.2018.34004
B. Saikia, G. Parthasarathy, R. R. Borah
{"title":"Raman and Infrared Spectroscopic Tentative Identification of Organic Traces in Sadiya (LL5) Ordinary Chondrite","authors":"B. Saikia, G. Parthasarathy, R. R. Borah","doi":"10.22606/ADAP.2018.34004","DOIUrl":"https://doi.org/10.22606/ADAP.2018.34004","url":null,"abstract":"","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126658490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.22606/ADAP.2018.34001
G. Y. Smolkov
{"title":"The Natural Changes of Solar-Terrestrial Relations","authors":"G. Y. Smolkov","doi":"10.22606/ADAP.2018.34001","DOIUrl":"https://doi.org/10.22606/ADAP.2018.34001","url":null,"abstract":"","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125954518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.22606/adap.2018.34003
L. Zaninetti
The evaluation of the physical parameters or effects such as the luminosity function (LF) or the photometric maximum (PM) for galaxies is routinely modeled by their spectroscopic redshift. Here, we model LF and PM for galaxies by the photometric redshift as given by the Spitzer Wide-Area Infrared Extragalactic (SWIRE) catalog in the framework of a lognormal LF. In addition, we compare our model with the Schechter LF for galaxies. The adopted cosmological framework is that of the flat cosmology.
{"title":"A Lognormal Luminosity Function for SWIRE in Flat Cosmology","authors":"L. Zaninetti","doi":"10.22606/adap.2018.34003","DOIUrl":"https://doi.org/10.22606/adap.2018.34003","url":null,"abstract":"The evaluation of the physical parameters or effects such as the luminosity function (LF) or the photometric maximum (PM) for galaxies is routinely modeled by their spectroscopic redshift. Here, we model LF and PM for galaxies by the photometric redshift as given by the Spitzer Wide-Area Infrared Extragalactic (SWIRE) catalog in the framework of a lognormal LF. In addition, we compare our model with the Schechter LF for galaxies. The adopted cosmological framework is that of the flat cosmology.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116982174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-11-01DOI: 10.22606/ADAP.2018.34006
N. Wickramasinghe, M. Rycroft, D. Wickramasinghe, D. Wallis, R. Temple, G. Tokoro, A. Syroeshkin, T. Grebennikova, O. Tsygankov, Millington Road Cambridge Cb Hw Uk. Caesar Consultancy, Moscow Russian Federation Microbiology named Gamalei, Korolev Rocket
The discovery by Russian researchers (Grebennikova et al., 2018) of microorganisms on the exterior surface of the International Space Station (ISS) on several occasions between 2013 and 2017 may be interpreted as evidence supporting the Hoyle-Wickramasinghe theory of cometary panspermia. The homologies between the ISS-recovered genotypes and known terrestrial bacteria can be seen as evidence of co-evolution and gene transfers (HGT) within a biosphere that spans astronomical distances. On the one hand, the height of the ISS orbit at 400km can be argued as being too high for lofting surface microorganisms. However, there is a theory that purports to explain the possible transport of small particles from the troposphere into the lower stratosphere and ionosphere as a result of vortex motions as well as vertical flows (streamers), which are generated as a result of the development of the modulational instability in the ionospheric plasma. More research is needed to properly evaluate this proposal.
俄罗斯研究人员(Grebennikova et al.， 2018)在2013年至2017年期间多次在国际空间站(ISS)外表面发现微生物，这可能被解释为支持Hoyle-Wickramasinghe彗星泛种论的证据。国际空间站恢复的基因型与已知陆地细菌之间的同源性可以被视为跨越天文距离的生物圈内共同进化和基因转移(HGT)的证据。一方面，国际空间站400公里的轨道高度可能会被认为对地表微生物来说太高了。然而，有一种理论声称可以解释小粒子从对流层进入平流层下层和电离层的可能运输，这是由于涡旋运动和垂直流(飘带)的结果，这是电离层等离子体调制不稳定性发展的结果。需要更多的研究来正确评估这一建议。
{"title":"Confirmation of Microbial Ingress from Space","authors":"N. Wickramasinghe, M. Rycroft, D. Wickramasinghe, D. Wallis, R. Temple, G. Tokoro, A. Syroeshkin, T. Grebennikova, O. Tsygankov, Millington Road Cambridge Cb Hw Uk. Caesar Consultancy, Moscow Russian Federation Microbiology named Gamalei, Korolev Rocket","doi":"10.22606/ADAP.2018.34006","DOIUrl":"https://doi.org/10.22606/ADAP.2018.34006","url":null,"abstract":"The discovery by Russian researchers (Grebennikova et al., 2018) of microorganisms on the exterior surface of the International Space Station (ISS) on several occasions between 2013 and 2017 may be interpreted as evidence supporting the Hoyle-Wickramasinghe theory of cometary panspermia. The homologies between the ISS-recovered genotypes and known terrestrial bacteria can be seen as evidence of co-evolution and gene transfers (HGT) within a biosphere that spans astronomical distances. On the one hand, the height of the ISS orbit at 400km can be argued as being too high for lofting surface microorganisms. However, there is a theory that purports to explain the possible transport of small particles from the troposphere into the lower stratosphere and ionosphere as a result of vortex motions as well as vertical flows (streamers), which are generated as a result of the development of the modulational instability in the ionospheric plasma. More research is needed to properly evaluate this proposal.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129678094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.22606/ADAP.2018.33005
A. Paul, G. Mandal, A. Mamun, M. Amin
{"title":"The Modulation of a Dust Ion-Acoustic Wave in a Collisional Dusty Plasma","authors":"A. Paul, G. Mandal, A. Mamun, M. Amin","doi":"10.22606/ADAP.2018.33005","DOIUrl":"https://doi.org/10.22606/ADAP.2018.33005","url":null,"abstract":"","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124951384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.22606/ADAP.2018.33003
N. Wickramasinghe, Michael J. Rycrof, Millington Road Cambridge Cb Hw Uk. Caesar Consultancy
The transport of electrically charged bacterial-sized dust particles from the stratosphere to the high ionosphere is discussed. With the maximum electric field associated with the Global Electric Circuit during both active thunderstorm and fair weather conditions, we show that electric forces are inadequate to overcome gravity in lofting dust particles from the stratosphere to heights of ~ 400 km in the ionosphere, where they have recently been discovered at the orbit of the International Space Station.
{"title":"On the Difficulty of the Transport of Electrically Charged Submicron Dust from the Earth’s Surface to the High Ionosphere","authors":"N. Wickramasinghe, Michael J. Rycrof, Millington Road Cambridge Cb Hw Uk. Caesar Consultancy","doi":"10.22606/ADAP.2018.33003","DOIUrl":"https://doi.org/10.22606/ADAP.2018.33003","url":null,"abstract":"The transport of electrically charged bacterial-sized dust particles from the stratosphere to the high ionosphere is discussed. With the maximum electric field associated with the Global Electric Circuit during both active thunderstorm and fair weather conditions, we show that electric forces are inadequate to overcome gravity in lofting dust particles from the stratosphere to heights of ~ 400 km in the ionosphere, where they have recently been discovered at the orbit of the International Space Station.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122504919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.22606/ADAP.2018.33006
Foisal B. T. Siddiki, Abdullah Al Mamun, M. Amin
The basic features of linear and nonlinear quantum electron-acoustic (QEA) waves in a degenerate quantum plasma (containing non-relativistically degenerate electrons, superthermal or κ-distributed electrons, and stationary ions) are theoretically investigated. The nonlinear Schödinger (NLS) equation is derived by employing the reductive perturbation method. The stationary solitonic solution of the NLS equation is obtained, and examined analytically as well as numerically to identify the basic features of the QEA envelope solitons. It has been found that the effects of the degeneracy and exchange/Bohm potentials of cold electrons, and superthermality of hot electrons significantly modify the basic properties of linear and nonlinear QEA waves. It is observed that the QEA waves are modulationally unstable for k < kc, where kc is the maximum (critical) value of the QEA wave number k below which the QEA waves are modulationally unstable), and that for k < kc the solution of the NLS equation gives rise to the bright envelope solitons, which are found to be localized in both spatial (ξ) and time (τ) axes. It is also observed that as the spectral index κ is increased, the critical value of the wave number (amplitude of the QEA envelope bright solitons) decreases (increases). The implications of our results should be useful in understanding the localized electrostatic perturbation in solid density plasma produced by irradiating metals by intense laser, semiconductor devices, microelectronics, etc.
{"title":"Quantum Electron-acoustic Envelope Solitons and Their Modulational Instability in a Degenerate Quantum Plasma","authors":"Foisal B. T. Siddiki, Abdullah Al Mamun, M. Amin","doi":"10.22606/ADAP.2018.33006","DOIUrl":"https://doi.org/10.22606/ADAP.2018.33006","url":null,"abstract":"The basic features of linear and nonlinear quantum electron-acoustic (QEA) waves in a degenerate quantum plasma (containing non-relativistically degenerate electrons, superthermal or κ-distributed electrons, and stationary ions) are theoretically investigated. The nonlinear Schödinger (NLS) equation is derived by employing the reductive perturbation method. The stationary solitonic solution of the NLS equation is obtained, and examined analytically as well as numerically to identify the basic features of the QEA envelope solitons. It has been found that the effects of the degeneracy and exchange/Bohm potentials of cold electrons, and superthermality of hot electrons significantly modify the basic properties of linear and nonlinear QEA waves. It is observed that the QEA waves are modulationally unstable for k < kc, where kc is the maximum (critical) value of the QEA wave number k below which the QEA waves are modulationally unstable), and that for k < kc the solution of the NLS equation gives rise to the bright envelope solitons, which are found to be localized in both spatial (ξ) and time (τ) axes. It is also observed that as the spectral index κ is increased, the critical value of the wave number (amplitude of the QEA envelope bright solitons) decreases (increases). The implications of our results should be useful in understanding the localized electrostatic perturbation in solid density plasma produced by irradiating metals by intense laser, semiconductor devices, microelectronics, etc.","PeriodicalId":131060,"journal":{"name":"Advances in Astrophysics","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117181981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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