The disk instability picture gives a plausible explanation for the behavior of soft X-ray transient systems if self-irradiation of the disk is included. We show that there is a simple relation between the peak luminosity (at the start of an outburst) and the decay timescale. We use this relation to place constraints on systems assumed to undergo disk instabilities. The observable X-ray populations of elliptical galaxies must largely consist of long-lived transients, as deduced on different grounds by Piro and Bildsten (2002). The strongly-varying X-ray source HLX-1 in the galaxy ESO 243-49 can be modeled as a disk instability of a highly super-Eddington stellar-mass binary similar to SS433. A fit to the disk instability picture is not possible for an intermediate-mass black hole model for HLX-1. Other, recently identified, super-Eddington ULXs might be subject to disk instability.
A statistical study of super-luminous supernovae in the magnetar engine model and implications for their connection with gamma-ray bursts and hypernovae
HYPERION. Shedding light on the first luminous quasars: A correlation between UV disc winds and X-ray continuum
INAF - Osservatorio astronomico di Roma(意大利国家天体物理研究所罗马天文台);INAF - Osservatorio Astronomico di Trieste(意大利国家天体物理研究所的里雅斯特天文台);Dipartimento di Fisica, Sezione di Astronomia, Università di Trieste(的里雅斯特大学物理系天文学部);Centre for Extragalactic Astronomy, Department of Physics, Durham University(杜伦大学物理系河外天文中心);Centro de Astrobiología (CAB), CSIC-INTA(西班牙国家航空航天技术研究所/西班牙国家研究委员会天体生物学中心);Dipartimento di Matematica e Fisica, Università Roma Tre(罗马第三大学数学与物理系);INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica Milano(意大利国家天体物理研究所米兰空间天体物理学与宇宙物理学研究所);Dipartimento di Fisica e Astronomia ‘Augusto Righi’, Università degli Studi di Bologna(博洛尼斯塔大学物理与天文学奥古斯托·里基系)
Widespread steep X-ray spectra of luminous $z=5.85-7.64$ quasars and their implications for future X-ray surveys
INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna(意大利国家天体物理研究所-博洛尼亚天体物理与空间科学天文台);INAF - Osservatorio Astronomico di Roma(意大利国家天体物理研究所-罗马天文台);University of Bristol(布里斯托大学);INAF — Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所-阿尔切特里天体物理天文台);Università di Pisa(比萨大学);INAF – Osservatorio Astronomico di Trieste(意大利国家天体物理研究所-的里雅斯特天文台);IFPU - Institute for Fundamental Physics of the Universe(基础物理宇宙研究所)
Luminous Fast Blue Optical Transients in the 2040s
Radboud University(拉德堡德大学);ESA-ESTEC(欧洲空间局欧洲空间研究与技术中心);University of Cambridge(剑桥大学);University of Warwick(华威大学);University of Bath(巴斯大学);Liverpool John Moores University(利物浦约翰摩尔斯大学)