منابع مشابه
A High-Sensitive Optical Counterpart Search Experiment
We are constructing a 0.6 meter telescope system to search for early time gamma-ray burst(GRB) optical counterparts. Super-LOTIS (Super-Livermore Optical Transient Imaging System) is an automated telescope system that has a 0.8 x 0.8◦ field-of-view, is sensitive to Mv ∼ 19 and responds to a burst trigger within 5 min. This telescope will record images of the gamma-ray burst coordinates that is ...
متن کاملThe Search for an Optical Counterpart
We report results of follow-up multicolor photometry of the optical variable source that is a probable remnant of the gamma-ray burst GRB970508 discovered by the Bep-poSAX satellite (IAUC 6649). Observations were carried out in Johnson-Kron-Cousins BVR c I c system with the 1-m and 6-m telescopes of SAO RAS. Between the 2nd and the 5th day after the burst a fading of the remnant is well fitted ...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولThe optical counterpart of IGR J00291+5934 in quiescence
Aims. The recent (December 2004) discovery of the sixth accretion-powered millisecond X-ray pulsar IGR J00291+5934 provides a very good chance to deepen our knowledge of such systems. Although these systems are well studied at high energies, poor informations are available for their optical/NIR counterparts during quiescence. Up to now, only for SAX J1808.4-3658, the first discovered system of ...
متن کاملSpectroscopy of the Optical Counterpart to Ser X - 1
We present WHT and VLT spectroscopy of MM Ser, the optical counterpart to Ser X1. We deblend the red spectra of the two close stars identified by Wachter (1997) and show that the brighter of the two is responsible for the Hα and He i emission, hence confirming that this is the true counterpart of the X-ray source.We also identify several He ii and N iii lines in the blue spectrum. The isolated ...
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ژورنال
عنوان ژورنال: Nature
سال: 1979
ISSN: 0028-0836,1476-4687
DOI: 10.1038/281048a0