| 000 | 03150cam a2200337 a 4500 | ||
|---|---|---|---|
| 003 | EG-GiCUC | ||
| 005 | 20250223031435.0 | ||
| 008 | 160305s2015 ua d f m 000 0 eng d | ||
| 040 |
_aEG-GiCUC _beng _cEG-GiCUC |
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| 041 | 0 | _aeng | |
| 049 | _aDeposite | ||
| 097 | _aPh.D | ||
| 099 | _aCai01.12.01.Ph.D.2015.Na.I | ||
| 100 | 0 | _aNasser Ahmed Nasser Abuseif | |
| 245 | 1 | 0 |
_aInvestigate the evolution of spectral propertiesand extremely high accretion rates of supermassive black hole quasars as a function of redshift / _cNasser Ahmed Nasser Abuseif ; Supervised Mohamed Rassem , Anas Mohamed Osman |
| 246 | 1 | 5 | _a{uFE91}{uFEA4}{uFE9A} {uFE97}{uFEC4}{uFEEE}ر ا{uئإؤئ}{uئإء٨}{uئإآأ}{uئإ٨إ}{uئإ٨آ}{uئإآء} ا{uئإؤئ}{uئإأ٤}{uئآئئ}{uئإؤ٤}{uئآئئ}{uئإ٩٤} و {uئإإ٣}{uئإأأ}{uئإءء}ل ا{uئإؤئ}{uئإ٩٨}{uئإءإ}ا{uئإؤآ}{uئإإ٢} ا{uئإؤئ}{uئإؤ٤}{uئإ٨إ}{uئإ٨آ}{uئإؤ٦} {uئإؤئ}{uئإإ٠}{uئإ٩أ}{uئإؤ٨}{uئإإإ}ب ا{uئإؤئ}{uئإآ٤}{uئإإإ}داء {uئإؤ٣}{uئإ٨إ}{uئإ٨آ}{uئإؤ٨}{uئإ٩٤} ا{uئإؤئ}{uئإؤأ}{uئإ٩٨}{uئإؤإ} (ا{uئإؤئ}{uئإؤأ}{uئإإإ}ازارات) و{uئإؤآ}{uئآئئ}{uئإؤ٤}{uئآئئ}{uئإ٩٤} {uئإ٩٧}{uئإأ٤}{uئإإإ}رھ{ێښڙڌڙ ̆{ێښڙژږ̆{ێښڙڕڕا̆{uئإؤئ}{uئإ٩٤} {uئإؤ٣}{uئإئ٠} ا{uئإئآ}{uئإإ٧}{uئإء٤}{uئإءإ}اف ا{uئإؤئ}{uئإأ٠}{uئإإإ}{uئإ٨آ}{uئإئ٢} {uئإإ٧}{uئإء٤}{uئإإإ} ا{uئإئ٧}{uئإء٣}{uئإإ٤}{uئإءإ} |
| 260 |
_aCairo : _bNasser Ahmed Nasser Abuseif , _c2015 |
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| 300 |
_a178 P. : _b charts ; _c25cm |
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| 502 | _aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Astronomy and Meteorology | ||
| 520 | _aThis study is mainly concerned with studying some aspects of quasars evolution, e.g X- ray spectral properties of quasars (QSOs), Supermassive Black hole (SMBHs) and how the properties of quasars evolve as a function of red shift. We focus on X-ray evolution of spectral properties of QSO as a function of red shift. Our main objective is to establish a new X-ray database of quasars. The total X-ray samples used in our new database is much more than the data obtained in the previous studies. The huge databases helped us to investigate the globular properties of QSOs that are measured in optical and X-ray as a function of red shift. We have found from the quasars distribution as a function of red shift that there is a small number of quasars at 2 < Z < 3, and Z > 5, while the number increases largely at Z < 2 and 3 < Z < 5. This result indicates the importance of observing quasars using X-ray at ranges of red shift that has small numbers in future research. | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aQuasars | |
| 653 | 4 | _aRed Shift | |
| 653 | 4 | _aX-ray spectral properties | |
| 700 | 0 |
_aAnas Mohamed Osman , _eSupervisor |
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| 700 | 0 |
_aMohamed Rassem , _eSupervisor |
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| 856 | _uhttp://172.23.153.220/th.pdf | ||
| 905 |
_aNazla _eRevisor |
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| 905 |
_aSoheir _eCataloger |
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| 942 |
_2ddc _cTH |
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| 999 |
_c55336 _d55336 |
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