GRB的一个三步模型：Prompt emission and early afterglow

astro-ph/0608470 [abs, ps, pdf, other] :

Title: A three stage model for the inner engine of Gamma Ray Burst: Prompt emission and early afterglow
Authors: Jan Staff, Rachid Ouyed, Manjari Bagchi
Comments: submitted to ApJ

We propose a new model within the ``Quark-nova'' scenario to interpret the recent observations of early afterglows of long Gamma-Ray Bursts (GRB) with the Swift satellite. This is a three-stage model within the context of a core-collapse supernova. Stage 1 is an accreting (proto-) neutron star leading to a possible delay between the core collapse and the GRB. Stage 2 is an accreting quark-star, generating the prompt GRB. Stage 3, which occurs only if the quark-star collapses to form a black-hole, consists of an accreting black-hole. The jet launched in this accretion process interacts with the ejecta from stage 2, and can generate the flaring activity frequently seen in X-ray afterglows. This model can account for both the energies and the timescales of GRBs, in addition to the newly discovered early X-ray afterglow features.

翻译：
我们在“夸克－超新星”的框架内提出了一个新的解释最近Swift卫星观测到的长伽玛暴的早期余辉的模型。这是一个在中心塌缩超新星基础上提出的三步模型。第一阶段是中子星吸积过程，导致中心塌缩和GRB之间有一个时间延迟。第二阶段是夸克星吸积，产生GRB。第三阶段，只有在夸克星塌缩形成黑洞时才可能发生，最后导致一个吸积的黑洞。此时吸积过程产生的喷流与第二步形成的喷出物质相互作用，并产生X射线余辉中经常看到闪耀。该模型不仅能够拟合伽玛暴能量和时标，而且可以新观测到X射线余辉的特征。