Can the propeller outflow from AE Aquarii be imaged directly?
نویسندگان
چکیده
منابع مشابه
A search for TeV emission from AE Aquarii
We have observed the cataclysmic variable AE Aqr for a total of 68.7 hours over the epoch 1991-95 using the Whipple Observatory 10 m gamma-ray telescope. An analysis of these data has revealed no evidence for any steady, pulsed or episodic TeV emission. We have calculated an upper limit for steady emission of 4.0 x lo-‘* photons cm-‘s-l at an energy threshold of 900 GeV. This is three orders of...
متن کاملA Search for VHE Emission from AE Aquarii
The DQ Her type cataclysmic variable AE Aquarii was observed with the rst Cerenkov imaging telescope of the projected HEGRA ve telescope array in August and September 1994. A naive analysis using the false source method yielded no evidence of an un-pulsed VHE -ray ux or of large scale are activity. The results of a test for periodicity in the 34 s to 16 s region will be available in due course.
متن کاملFireball Models for Flares in AE Aquarii
We examine the flaring behaviour of the cataclysmic variable AE Aqr in the context of the ‘magnetic propeller’ model for this system. The flares are thought to arise from collisions between high density regions in the material expelled from the system after interaction with the rapidly rotating magnetosphere of the white dwarf. We calculate the first quantitative models for the flaring and calc...
متن کاملA Flare of Ae Aquarii Observed with Xmm-newton
We present the results of analyzing the XMM-Newton data obtained in 2001 November 7-8. A flare is observed simultaneously in X-ray and UV together with a quiescence. We find that during the flare event X-ray flux varies with UV with no significant time lag, indicating a close correlation of flux variation for X-ray and UV flares. An upper limit of the lag is estimated to be ∼ 1 min. From a timi...
متن کاملProtein Thermodynamics Can Be Predicted Directly from Biological Growth Rates
Life on Earth is capable of growing from temperatures well below freezing to above the boiling point of water, with some organisms preferring cooler and others hotter conditions. The growth rate of each organism ultimately depends on its intracellular chemical reactions. Here we show that a thermodynamic model based on a single, rate-limiting, enzyme-catalysed reaction accurately describes popu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 2004
ISSN: 0252-9211
DOI: 10.1017/s0252921100002232