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  • Oxford University Press (OUP)  (60)
  • 1
    Online Resource
    Online Resource
    Plant-on-chip: Core morphogenesis processes in the tiny plant Wolffia australiana
    Oxford University Press (OUP) ; 2023
    In:  PNAS Nexus Vol. 2, No. 5 ( 2023-05-02)
    Details
    In: PNAS Nexus, Oxford University Press (OUP), Vol. 2, No. 5 ( 2023-05-02)
    Abstract: A plant can be thought of as a colony comprising numerous growth buds, each developing to its own rhythm. Such lack of synchrony impedes efforts to describe core principles of plant morphogenesis, dissect the underlying mechanisms, and identify regulators. Here, we use the minimalist known angiosperm to overcome this challenge and provide a model system for plant morphogenesis. We present a detailed morphological description of the monocot Wolffia australiana, as well as high-quality genome information. Further, we developed the plant-on-chip culture system and demonstrate the application of advanced technologies such as single-nucleus RNA-sequencing, protein structure prediction, and gene editing. We provide proof-of-concept examples that illustrate how W. australiana can decipher the core regulatory mechanisms of plant morphogenesis.
    Type of Medium: Online Resource
    ISSN: 2752-6542
    URL: Article
    DOI: 10.1093/pnasnexus/pgad141
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 3120703-0
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  • 2
    Online Resource
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    The afterglow of GRB 070707 and a possible kilonova component
    Oxford University Press (OUP) ; 2023
    In:  Monthly Notices of the Royal Astronomical Society Vol. 521, No. 1 ( 2023-03-02), p. 269-277
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 521, No. 1 ( 2023-03-02), p. 269-277
    Abstract: GRB 070707 was the first short gamma-ray burst (GRB) detected by INTEGRAL and the optical afterglow was attributed to the prolonged activity of the central engine in the literature. Here, we reanalyse the afterglow data and examine the physical origin of the emission. The redshift of this burst is uncertain and in this work we assume an association with a galaxy at the redshift of 0.2394 for a chance coincidence probability Pcc = 0.046. It is found that the sole forward shock radiation cannot well reproduce the data, while including a kilonova component similar to AT2017gfo is very helpful in reproducing the multiwavelength afterglow emission. The properties of the candidate host galaxy have been studied in detail; its high metallicity, low star formation rate, and old stellar population age are similar to the host galaxies of other GRBs associated with kilonovae. In view of the facts that a kilonova signal was identified in the first short GRB with detected optical emission (i.e. GRB 050709) and the first short GRB with gravitational wave detection (i.e. GRB 170817A), and now the identification of a kilonova signature in the first INTEGRAL short GRB strongly indicates that kilonovae are rather common among the neutron star merger events.
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1093/mnras/stad541
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2016084-7
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  • 3
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    Online Resource
    Cosmological tests using gamma-ray bursts, the star formation rate and possible abundance evolution
    Oxford University Press (OUP) ; 2014
    In:  Monthly Notices of the Royal Astronomical Society Vol. 439, No. 4 ( 2014-04-21), p. 3329-3341
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 439, No. 4 ( 2014-04-21), p. 3329-3341
    Type of Medium: Online Resource
    ISSN: 1365-2966 , 0035-8711
    URL: Article
    DOI: 10.1093/mnras/stu166
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2014
    detail.hit.zdb_id: 2016084-7
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  • 4
    Online Resource
    Online Resource
    Gamma-ray bursts: the isotropic-equivalent-energy function and the cosmic formation rate : GRBs: energy function and formation rate
    Oxford University Press (OUP) ; 2012
    In:  Monthly Notices of the Royal Astronomical Society Vol. 423, No. 3 ( 2012-07-01), p. 2627-2632
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 423, No. 3 ( 2012-07-01), p. 2627-2632
    Type of Medium: Online Resource
    ISSN: 0035-8711
    URL: Article
    DOI: 10.1111/j.1365-2966.2012.21068.x
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2012
    detail.hit.zdb_id: 2016084-7
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  • 5
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    Online Resource
    Hierarchical triple mergers: testing Hawking’s area theorem with the inspiral signals
    Oxford University Press (OUP) ; 2023
    In:  Monthly Notices of the Royal Astronomical Society Vol. 523, No. 3 ( 2023-06-08), p. 4113-4119
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 523, No. 3 ( 2023-06-08), p. 4113-4119
    Abstract: Hawking’s area theorem is one of the fundamental laws of black holes (BHs), which has been tested at a confidence level of $\sim 95~{{\ \rm per\ cent}}$ with gravitational wave (GW) observations by analysing the inspiral and ringdown portions of GW signals, independently. In this work, we propose to carry out the test in a new way with the hierarchical triple merger (i.e. two successive BH mergers occurred sequentially within the observation window of GW detectors), for which the properties of the progenitor BHs and the remnant BH of the first coalescence can be inferred from the inspiral portions of the two mergers. As revealed in our simulations, the BH area law can be well confirmed for some plausible hierarchical triple merger events detectable in LIGO/Virgo/KAGRA/LIGO-India’s O4/O5 runs. Our proposed method provides significant facilitation for testing the area law and complements previous methods.
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1093/mnras/stad1676
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2023
    detail.hit.zdb_id: 2016084-7
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  • 6
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    Online Resource
    Identifying gravitational wave emission signature in electromagnetic observations of short gamma-ray bursts
    Oxford University Press (OUP) ; 2022
    In:  Monthly Notices of the Royal Astronomical Society Vol. 513, No. 1 ( 2022-04-29), p. 1365-1371
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 513, No. 1 ( 2022-04-29), p. 1365-1371
    Abstract: Observations of the long-lived X-ray plateau in short gamma-ray burst (SGRB) afterglow suggest that a portion of binary neutron star mergers would leave behind a rapidly spinning, strongly magnetized neutron star (millisecond magnetar). The new-born magnetar may undergo large deformation due to magnetic distortion or unstable oscillation, which would emit the extended gravitational wave (GW) associated with the SGRB X-ray plateau. In this work, we focus on the spin-down luminosity evolution of magnetar by considering the spin energy loss due to the GW and magnetic dipole radiation, and systematically analyse the SGRB light curves of our magnetar sample. The results show that GW emission signatures have existed in the spin-down stage of GRB 090426 and GRB 150424A. We also present constraints on the ellipticity of the new-born magnetar as ε & lt; 1.58 × 10−3(B/1015 G)(P/1 ms). The magnetar can lose significant spin energy via GW radiation if the ellipticity ε ≥ 10−3 and magnetic field strength B ∼ 1015 G. In addition, we derive the evolution of GW strain for magnetars through their spin-down processes. This result shows that the GW signals from these magnetars may be detectable for the Einstein Telescope (ET). For a rapidly spinning magnetar (P ∼ 1 ms), the detection horizons for aLIGO O3, aLIGO O5, and ET detectors are ∼60, ∼210, and ∼900 Mpc, respectively. The detection of the GW emission from new-born millisecond magnetar may reveal the interior composition of magnetar in the near future.
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1093/mnras/stac859
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2016084-7
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  • 7
    Online Resource
    Online Resource
    γ-ray burst ultraviolet/optical afterglow polarimetry as a probe of quantum gravity
    Oxford University Press (OUP) ; 2007
    In:  Monthly Notices of the Royal Astronomical Society Vol. 376, No. 4 ( 2007-04), p. 1857-1860
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 376, No. 4 ( 2007-04), p. 1857-1860
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1111/j.1365-2966.2007.11576.x
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2007
    detail.hit.zdb_id: 2016084-7
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  • 8
    Online Resource
    Online Resource
    The multiwavelength afterglow emission of magnetar giant flare-like event GRB 200415A
    Oxford University Press (OUP) ; 2022
    In:  Monthly Notices of the Royal Astronomical Society Vol. 517, No. 3 ( 2022-10-28), p. 3881-3887
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 517, No. 3 ( 2022-10-28), p. 3881-3887
    Abstract: Giant flares are the brightest and rarest outbursts from magnetars, with isotropic energies of 1044–1046 erg. GRB 200415A is suggested as a magnetar giant flare from NGC 253. Fermi Large Area Telescope detected the GeV afterglow emission from the flare, which is the first time that the GeV emission is detected from a giant flare. In this paper, we study the multiwavelength afterglow radiation of electrons accelerated by the forward and reverse shocks, produced via interactions between the ejecta and the circumburst medium in the afterglow phase of GRB 200415A. We found that in the GeV band, the forward shock emission is usually higher than the reverse shock emission, and can explain observations well, while in the optical and infrared bands, contributions from the forward and reverse shocks can be comparable for reasonable parameter sets, and the brightness of the forward-shock emission can reach 20 mag (AB). We predict that future telescopes such as Wide Field Survey Telescope, Chinese Space Station Telescope, the Large Synoptic Survey Telescope, and James Webb Space Telescope can detect the optical and infrared afterglow emission from giant flares similar to GRB 200415A. In addition, we consider two cases where the ejecta are dominated by protons or electron–positron pairs. We find that the reverse shock emission is comparable in these two cases for a hard electron spectrum, while for a soft electron spectrum, the reverse shock emission is much weaker in the pair-dominating case..
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1093/mnras/stac2924
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2016084-7
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  • 9
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    Online Resource
    High-energy afterglow emission from gamma-ray bursts
    Oxford University Press (OUP) ; 2008
    In:  Monthly Notices of the Royal Astronomical Society Vol. 384, No. 4 ( 2008-03), p. 1483-1501
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 384, No. 4 ( 2008-03), p. 1483-1501
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Issue
    URL: Article
    DOI: 10.1111/mnr.2008.384.issue-4
    DOI: 10.1111/j.1365-2966.2007.12765.x
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2008
    detail.hit.zdb_id: 2016084-7
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  • 10
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    Online Resource
    Outliers in the Ep,z – Eγ relation of Fermi -GBM long-duration gamma-ray bursts
    Oxford University Press (OUP) ; 2022
    In:  Monthly Notices of the Royal Astronomical Society Vol. 518, No. 4 ( 2022-12-08), p. 6243-6252
    Details
    In: Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP), Vol. 518, No. 4 ( 2022-12-08), p. 6243-6252
    Abstract: Long gamma-ray bursts (GRBs) are typically associated with massive star core collapse, while the short GRBs are associated with compact binary mergers. However, recent evidence indicates that some peculiar long-duration bursts may correspond to compact binary mergers origins. In this paper, we use the data of the Fermi Gamma-ray Burst Monitor to search for peculiar long-duration bursts which may be from compact binary mergers based on outlier events in the $E_{p,z}\!-\!E_{\gamma ,\rm iso}$ relation. We obtained 10 outlier events by systematically analysing bursts with $T_{90}\gt 4.2 \rm \ s$ from 2008 August to 2021 July. In order to determine whether these outlier events were from compact binary mergers, we analysed their properties, including spectral lag, hardness ratio, and energy-hardness parameter. Based on the distributions of T90 − HR and T90 − Ep, we calculated the probability of outlier events belonging to the short GRBs. Our analysis indicates that GRB 120304B is likely to arise from the merger of a neutron star and a massive white dwarf. GRB 150210A is likely to arise from massive star core collapse. The other eight GRBs are fuzzy bursts that have both long and short GRBs properties. Additionally, we find that outlier samples have relatively high Ep and low fluences.
    Type of Medium: Online Resource
    ISSN: 0035-8711 , 1365-2966
    URL: Article
    DOI: 10.1093/mnras/stac3504
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2016084-7
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