Detection of Nonthermal Optical Flashes with 10−3-10−1 s Duration from Some LMXBs
نویسندگان
چکیده
منابع مشابه
detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Optical flashes and GeV-TeV flashes from gamma-ray bursts
The optical flash caught by ROTSE in GRB 990123 overlaps with the MeV radiation front. This overlapping has two implications: (1) If the flash has a synchrotron origin, the electrons emitting optical radiation must also create a GeV-TeV flash by inverse Compton scattering of the MeV photons. The high-energy flash can be much stronger than its optical counterpart and comparable with the main MeV...
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Only one optical flash associated with a gamma-ray burst has been detected so far by ROTSE. There are also upper limits obtained by several groups for several bursts. Recent model calculations indicate a possibility that optical flash may precede the GRB. Such flashes are undetectable in the currently popular observing mode, with optical instruments responding to GRB triggers. There is a need t...
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Thermal X-ray emission which is simultaneous with the prompt gamma-rays has been detected for the first time from a supernova connected with a gamma-ray burst (GRB), namely GRB060218/SN2006aj. It has been interpreted as arising from the breakout of a mildly relativistic, radiation-dominated shock from a dense stellar wind surrounding the progenitor star. There is also evidence for the presence ...
متن کاملDoes Anātman Rationally Entail Altruism? On Bodhicaryāvatāra 8:101-103
In the eighth chapter of the Bodhicaryāvatāra, the Buddhist philosopher Śāntideva has often been interpreted as offering an argument that accepting the ultimate nonexistence of the self (anātman) rationally entails a commitment to altruism, the view that one should care equally for self and others. In this essay, I consider reconstructions of Śāntideva’s argument by contemporary scholars Paul W...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1995
ISSN: 0252-9211
DOI: 10.1017/s0252921100035302