کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487783 1523722 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the morphology of outbursts of accreting millisecond X-ray pulsar Aquila X-1
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
On the morphology of outbursts of accreting millisecond X-ray pulsar Aquila X-1
چکیده انگلیسی
We present the X-ray light curves of the last two outbursts - 2014 & 2016 - of the well known accreting millisecond X-ray pulsar (AMXP) Aquila X-1 using the monitor of all sky X-ray image (MAXI) observations in the 2-20 keV band. After calibrating the MAXI count rates to the all-sky monitor (ASM) level, we report that the 2016 outburst is the most energetic event of Aql X-1, ever observed from this source. We show that 2016 outburst is a member of the long-high class according to the classification presented by Güngör et al. with ∼ 68 cnt/s maximum flux and ∼ 60 days duration time and the previous outburst, 2014, belongs to the short-low class with ∼ 25 cnt/s maximum flux and ∼ 30 days duration time. In order to understand differences between outbursts, we investigate the possible dependence of the peak intensity to the quiescent duration leading to the outburst and find that the outbursts following longer quiescent episodes tend to reach higher peak energetic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 56, October 2017, Pages 1-4
نویسندگان
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