Search Publications
A catalogue of high-mass X-ray binaries in the Galaxy: from the INTEGRAL to the Gaia era
García, Federico; Chaty, Sylvain; Fortin, Francis +1 more
Context. High-mass X-ray binaries (HMXBs) are a particular class of high-energy sources that require multi-wavelength observational efforts to be properly characterised. New identifications and the refinement of previous measurements are regularly published in the literature by independent teams of researchers and might, when they are collected in…
Primordial black hole constraints with Hawking radiation-A review
Auffinger, Jérémy
Primordial black holes are under intense scrutiny since the detection of gravitational waves from mergers of Solar-mass black holes in 2015. More recently, the development of numerical tools and the precision observational data have rekindled the effort to constrain the black hole abundance in the lower mass range, that is M < 1023 g…
An assessment of the association between a fast radio burst and binary neutron star merger
Zhang, Bing; Moroianu, Alexandra; Wen, Linqing +4 more
Fast radio bursts (FRBs) are bright millisecond-duration radio bursts at cosmological distances. While young magnetars are the leading source candidate, recent observations suggest that there may be multiple FRB progenitor classes. Here we investigate a potential coincidence between a binary neutron star merger event, GW190425, and a bright, non-r…
XRBcats: Galactic low-mass X-ray binary catalogue
Santangelo, A.; Wilms, J.; Doroshenko, V. +3 more
We present a new catalogue of low-mass X-ray binaries (LMXBs) in the Galaxy. The catalogue contains source names, coordinates, source types, fluxes, distances, system parameters, and other characteristic properties of 349 LMXBs, including systems that have been newly discovered or reclassified since the most recently reported LMXB catalogues. The …
XRBcats: Galactic High Mass X-ray Binary Catalogue★
Santangelo, A.; Doroshenko, V.; Avakyan, A. +1 more
Context. We present a new catalogue of high mass X-ray binaries (HMXBs) in the Galaxy that we call the Galactic High Mass X-ray Binary Catalogue (XRBcats), which improves upon the most recent of such catalogues. We include new HMXBs discovered since previous publications and revise the classification for several objects previously considered HMXBs…
Accretion geometry of the neutron star low mass X-ray binary Cyg X-2 from X-ray polarization measurements
Antonelli, L. A.; Costa, E.; Bianchi, S. +92 more
We report spectro-polarimetric results of an observational campaign of the bright neutron star low-mass X-ray binary Cyg X-2 simultaneously observed by IXPE, NICER, and INTEGRAL. Consistently with previous results, the broad-band spectrum is characterized by a lower-energy component, attributed to the accretion disc with kTin ≈ 1 keV, p…
Putting all the X in one basket: Updated X-ray constraints on sub-GeV Dark Matter
Pinetti, Elena; Fornengo, Nicolao; Cirelli, Marco +2 more
Sub-GeV dark matter particles can annihilate or decay producing e ± pairs which upscatter the low-energy photon fields in the Galaxy and generate an X-ray emission (via the Inverse Compton effect). Using X-ray data from XMM-NEWTON, INTEGRAL, NUSTAR and SUZAKU, we derive new constraints on this class of dark matter (DM). In the annihilat…
Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei
Perna, Rosalba; Tagawa, Hiromichi; Kimura, Shigeo S. +2 more
The origin of stellar-mass black hole mergers discovered through gravitational waves is being widely debated. Mergers in the disks of active galactic nuclei (AGNs) represent a promising source of origin, with possible observational clues in the gravitational-wave data. Beyond gravitational waves, a unique signature of AGN-assisted mergers is elect…
Constraints on primordial curvature spectrum from primordial black holes and scalar-induced gravitational waves
Yi, Zhu; Fei, Qin
The observational data of primordial black holes and scalar-induced gravitational waves can constrain the primordial curvature perturbation at small scales. We parameterize the primordial curvature perturbation by a broken power law form and find that it is consistent with many inflation models that can produce primordial black holes, such as nonm…
Constraints on light decaying dark matter candidates from 16 yr of INTEGRAL/SPI observations
Calore, F.; Dekker, A.; Serpico, P. D. +1 more
We apply the recently developed analysis of 16 yr of INTEGRAL/SPI data including a dark matter spatial template to derive bounds on dark matter candidates lighter than weakly interacting massive particles (like sterile neutrinos or axion-like particles) decaying into line or continuum electromagnetic final state channels. The bounds obtained are t…