Al-Birunis Knowledge of Sanskrit Astronomical Texts
Al-Birunis Knowledge of Sanskrit Astronomical Texts
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比鲁尼斯的梵文天文文本知识
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发表时间:
2014
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通讯作者:
D. Pingree
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作者:
D. Pingree
Al-Biruni's Knowledge of Sanskrit Astronomical TextsThe Moslem interpreter of Indian culture best known to the West, Abu 'I-Rayhan Muhammad al-Bfrunl, was carried off to Grazna by Sultan Mahmud in 1018 A.D.1 During the course of the following years he gained access to the Sanskrit literature current in northwestern India at the time, and made much of it available in Arabic by means of a series of books that he published in the late 20s and in the 30s of the eleventh century. In this paper I intend to consider the means by which he studied several Sanskrit texts on astronomy which were among the most important sources for his knowledge of Indian science, and to examine the question of the reliability of his reporting of Indian astronomical and physical theories.Al-BirunT was neither the first nor the last Moslem to study Indian astronomy. There were three paksas (that is, schools of astronomy) whose systems-and, in particular, whose parameters and computational techniques-had been partially familiar to Arabic-reading scholars since the eighth century A.D.2 The brâhmapaksa was initiated by the Paitamahasiddhanta of the Visnudharmottarapurana3 in the early fifth century, and its influence was already felt in Sasanian Iran when the first ZIk i Shahriyaran was composed in about 450.4 But the brahmapak$a's most prominent representative was the Brahmasphutasiddhanta composed by Brahmagupta at Bhillamala in southern Rajasthan in 628.5 Based mainly upon this text, though including some elements from the aryapaksa, was a work, apparently entitled Mahasiddhanta (al-Sindhind al-kablr), of which a copy was carried to Baghdad in 771 or 773 by a member of a delegation from Sind. This Mahasiddhanta was used by al-Fazarl and of Yacqub ibn Târiq7 in their several zijes composed between about 775 and 790, though they also derived some material from the Ptolemaic tradition and from the Zik i Shahriyârân of Yazdijird HI. The works of al-Fazârl and of Yacqub are the bases of the Sindhind tradition of Islamic astronomy,8 which al-Biruni had studied thoroughly and through which he had learned something of Indian astronomy long before his sojourn in the Panjab.The second Indian paksa of which elements reached Islam was the ardharatrika or midnight-system, initiated by Aryabhata in about 500.9 This was apparently the foundation of the version of the PahlaviZik i Shahriyârân that was published under Khusraw Anughirwan in 556;10much of this zik was, naturally, repeated in the similar zik issued under Yazdijird III, probably in the 630s, which was translated into Arabic as the Zlj al-Shâh by al-Tamimi toward the end of the eighth century.11 The ardharatrikapaksa was also followed by Brahmagupta in his Khandakhâdyaka12 written in 665, which, with its commentaries, was often cited by al-Biruni in the works that he wrote in the years immediately on either side of 1030,13 but whose elements also reached him through the Arabic version made in Sind in 735 and published under the title Zfj al-Arkand.14Finally, the third of the Sanskrit paksas that we must consider is the âryapaksa, also initiated by Aryabhata, in the Aryabhatjya, whose epoch is 499. Elements of this paksa, as we have noted above, were included in the Mahasiddhanta utilized by al-Fazâri and by Yacqub ibn Tariq. There was also a metrical Arabic version of at least a part of the Aryabhatjya, published as the Zlj al-Harqan in 742,1S and a fuller translation, the Zlj al-Arjabhar, was made, apparently toward the end of the eighth century, and was used by one Abu T-Hasan al-AhwazT.16Al-Biruni was familiar with many of the parameters and procedures of the brahmapaksa and of both of Aryabhata's paksas through the medium of at least some of these early Arabic translations before he went to India; in fact, most of our knowledge of these lost zijes is derived from al-BTruni himself. But the Indian systems were not presented in these texts with any integrity; their authors generally conflated material from various zijes without naming their sources, and thereby offered an extremely distorted and inaccurate picture of Indian astronomy. …