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arXiv 1602.03545astro-ph.HE
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短、长伽玛暴的速率和引力波发射

On the rate and on the gravitational wave emission of short and long GRBs

R. Ruffini, J. Rodriguez, M. Muccino, J. A. Rueda, Y. Aimuratov, U. Barres de Almeida, L. Becerra, C. L. Bianco, C. Cherubini, S. Filippi, D. Gizzi, M. Kovacevi… 展开作者

R. Ruffini, J. Rodriguez, M. Muccino, J. A. Rueda, Y. Aimuratov, U. Barres de Almeida, L. Becerra, C. L. Bianco, C. Cherubini, S. Filippi, D. Gizzi, M. Kovacevic, R. Moradi, F. G. Oliveira, G. B. Pisani, Y. Wang

摘要:

根据宇宙学红移观测到的大量伽玛射线暴,我们将伽玛射线暴分为7个子类,它们都是起源于引力波的双星。每个双星都由碳氧核心(CO $_{\rm core}$)、中子星(NS)、黑洞(BH)和白矮星(WD)组成。长爆发,传统上被认为是起源于一个具有超相对论喷射发射的BH,而不是发射GW,被细分为(I)X射线闪光(XRF),(II)双星驱动的超新星(BdHNe)和(III)BH超新星(BH-SNe)。它们是在诱导引力坍缩(IGC)范式中形成的,其前身是CO $_{\rm core}$ -NS/BH双星。CO $_{\rm core}$的超新星爆发触发了NS/BH的吸积过程。如果吸积没有导致NS达到其临界质量,则会发生XRF,而当BH存在或由吸积形成时,会发生BdHN。当双星不被破坏时,XRF导致NS-NS,BdHNe导致NS-BH。起源于NS-NS的短暴又可细分为(IV)短伽玛射线闪光(S-GRF)和(V)短伽玛暴(S-GRB),后者是BH形成时的短伽玛暴。在NS-BH和NS-WD中分别形成了(VI)超短伽玛暴(U-GRB)和(VII)伽玛闪光(GRF)。我们使用这些子类的发生率和GW发射来评估它们通过高级LIGO-Virgo,eLISA和共振棒的可探测性。我们讨论了我们的结果的后果,鉴于宣布的LIGO-Virgo合作的源GW 170817是由NS-NS起源。

英文摘要:

On the ground of the large number of gamma-ray bursts (GRBs) detected with cosmological redshift, we classified GRBs in seven subclasses, all with binary progenitors originating gravitational waves (GWs). Each binary is composed by combinations of carbon-oxygen cores (CO$_{\rm core}$), neutron stars (NSs), black holes (BHs) and white dwarfs (WDs). The long bursts, traditionally assumed to originate from a BH with an ultra-relativistic jetted emission, not emitting GWs, have been subclassified as (I) X-ray flashes (XRFs), (II) binary-driven hypernovae (BdHNe), and (III) BH-supernovae (BH-SNe). They are framed within the induced gravitational collapse (IGC) paradigm with progenitor a CO$_{\rm core}$-NS/BH binary. The supernova (SN) explosion of the CO$_{\rm core}$ triggers an accretion process onto the NS/BH. If the accretion does not lead the NS to its critical mass, an XRF occurs, while when the BH is present or formed by accretion, a BdHN occurs. When the binaries are not disrupted, XRFs lead to NS-NS and BdHNe lead to NS-BH. The short bursts, originating in NS-NS, are subclassified as (IV) short gamma-ray flashes (S-GRFs) and (V) short GRBs (S-GRBs), the latter when a BH is formed. There are (VI) ultra-short GRBs (U-GRBs) and (VII) gamma-ray flashes (GRFs), respectively formed in NS-BH and NS-WD. We use the occurrence rate and GW emission of these subclasses to assess their detectability by Advanced LIGO-Virgo, eLISA, and resonant bars. We discuss the consequences of our results in view of the announcement of the LIGO-Virgo Collaboration of the source GW 170817 as being originated by a NS-NS.

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