Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission


НазваGiant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission
Дата конвертації06.06.2013
Розмір445 b.
ТипПрезентации


Giant Pulses of Pulsar Radio Emission

  • Giant Pulses of Pulsar Radio Emission

  • A.D. Kuzmin

  • Pushino Radio Astronomy Observatory

  • Lebedev Physical Institute

  • Russia

  • Isolated Neutron Stars:

  • from the  Interior to the Surface, B9

  • London 2006






An example of a GP of the Crab pulsar



2. Giant pulses are very short and bright:

  • 2. Giant pulses are very short and bright:

  • Soglasnov et al. (2004) have proved that majority giant pulses

  • from the millisecond pulsar B1937+21 are shorter than 15 ns;

  • Hankins et al. (2003) found Crab pulsar pulse structure as short as 2 ns.

  • If one interprets the pulse duration in terms

  • of the maximum possible size of emitting region, then

  • 2 ns corresponds to a size of emitting body of only 60 cm,

  • the smallest entity ever detected outside our solar system.

  • A brightness temperature of GPs are

  • TB  5x1037K,

  • for Crab pulsar B0531+21 (Hankins et al 2003)

  • and TB 5x1039 K,

  • for B1937+21 (Soglasnov et al 2004)

  • the highest observed in the Universe.



Cumulative distribution of the pulse energy of pulsar PSR B1937+21 relative to the mean regular pulse energy (Cognard et al. 1996)











Giant pulses radio emission from the Crab pulsar results from the conversion of electrostatic turbulence in the pulsar magnetosphere by the mechanism of spatial collapse of nonlinear wave packets (Hankins T.H et al.,2003) Giant pulses radio emission is generated in the electric discharge taking place due to the magnetic reconnection of field lines connecting the opposite magnetic poles (Istomin Ya.N., 2004) Giant pulses are generated by means of coherent curvature radiation of charged relativistic solitons associated with sparking discharge of the inner gap potential drop above the polar cap (Gil, J & Melikadze G., 2004)





Схожі:

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconRadio Sounding of the Near-Sun Plasma Using Polarized Pulsar Pulses

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconPulsar picture Pulsar model

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconVlbi and Transients Very Long Baseline Interferometry and Pulses

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconRadio Astronomy Ganesh Sankaranarayanan

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconSterling Park Amateur Radio Club (sparc) Appreciation Hams Everywhere

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconPulsar research at soft -rays Lucien Kuiper, Wim Hermsen Hans Bloemen

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconПроблеми довгострокового прогнозування викидів парникових газів в україні
СО2 emission are associated with economic growth in developed economies, too (38 countries), 1991-2000
Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconStatus pulsar studies in soft gamma-rays Lucien Kuiper, Wim Hermsen, [Hans Bloemen]

Giant Pulses of Pulsar Radio Emission Giant Pulses of Pulsar Radio Emission iconПрограма національних стратегічних досліджень мчр/св program of National cdm/ji strategy Studies
Національне стратегічне дослідження (нсд) спільного впровадження та торгівлі викидами в україні the national strategy study (nss)...

Додайте кнопку на своєму сайті:
dok.znaimo.com.ua


База даних захищена авторським правом ©dok.znaimo.com.ua 2013
звернутися до адміністрації
dok.znaimo.com.ua
Головна сторінка