93 datasets found

Keywords: accretion

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  • GRBs data

    The detections of some long gamma-ray bursts (LGRBs) relevant to mergers of neutron star (NS)-NS or black hole (BH)-NS, as well as some short gamma-ray bursts (SGRBs) probably...
  • Galactic Bulge accreting binaries spectroscopy

    We present the identification of optical counterparts to 23 GBS X-ray sources. All sources are classified as accreting binaries according to the emission-line characteristics...
  • LMC pre-main sequences stars mass accretion rates

    We present a multiwavelength study of three star-forming regions, spanning the age range 1-14Myr, located between the 30 Doradus complex and supernova SN 1987A in the Large...
  • Mass accretion rates of PMS stars. VI. LH95 in LMC

    We report on the accretion properties of low-mass stars in the LH 95 association within the Large Magellanic Cloud. Using noncontemporaneous wideband optical and narrowband...
  • SEAMBHs. V. The third year

    This paper reports results of the third-year campaign of monitoring super-Eddington accreting massive black holes (SEAMBHs) in active galactic nuclei (AGNs) between 2014 and...
  • VLA, ALMA and SMA monitoring of Sgr A*

    We report new observations with the Very Large Array, Atacama Large Millimeter Array, and Submillimeter Array at frequencies from 1.0 to 355GHz of the Galactic Center black...
  • IR dust bubbles. II. YSOs model parameters

    We present an analysis of late-O/early-B-powered, parsec-sized bubbles and associated star formation using Two Micron All Sky Survey, GLIMPSE, MIPSGAL, and MAGPIS surveys. Three...
  • Accretion in 9 Orion OB1b T-Tauri stars

    The coevolution of T-Tauri stars and their surrounding protoplanetary disks dictates the timescales of planet formation. In this paper, we present magnetospheric accretion and...
  • A census of the low accretors. I. The catalog

    Observations have shown that the disk frequency and the fraction of accreting pre-main-sequence stars decrease with the age of the population and that some stars appear to have...
  • Accretion variability monitoring in the ONC

    The understanding of the accretion process has a central role in the understanding of star and planet formation. We aim to test how accretion variability influences previous...
  • optical variability of AGNs

    Accretion disks around supermassive black holes in active galactic nuclei produce continuum radiation at ultraviolet and optical wavelengths. Physical processes in the accretion...
  • Catalogue of ULX's line features

    Most ultraluminous X-ray sources (ULXs) are thought to be powered by super- Eddington accretion on to stellar-mass compact objects. Accretors in this extreme regime are...
  • Gaia/IPHAS catalogue of Ha-excess sources

    We present a catalogue of point-like H{alpha}-excess sources in the Northern Galactic Plane. Our catalogue is created using a new technique that leverages astrometric and...
  • IR lines of AGNs accretion disk

    Accretion states, which are universally observed in stellar mass black holes in X-ray binaries, might be expected in active galactic nuclei (AGN). This is the case at low...
  • A Chandra survey of z >= 4.5 quasars

    X-ray observations provide a unique probe of the accretion disc corona of supermassive black holes (SMBHs). In this paper, we present a uniform Chandra X-ray data analysis of a...
  • The Swift Bulge Survey. first X-ray results

    Very faint X-ray transients (VFXTs) are X-ray transients with peak X-ray luminosities (L_X_) of L_X_~<10^36^erg/s, which are not well understood. We carried out a survey of...
  • Black hole mass accretion rates for over 750 AGN

    Mass accretion rates in dimensionless and physical units, and efficiency factors describing the total radiant luminosity of the disc and the beam power of the outflow are...
  • Polarization of LMXB MAXI J1820+070

    We describe the first complete polarimetric dataset of the entire outburst of a low-mass black hole X-ray binary system and discuss the constraints for geometry and radiative...
  • Jet efficiencies and black hole spins in quasars

    The mechanisms responsible for the production of relativistic jets from supermassive black holes (SMBHs) accreting at near-Eddington rates are not well understood. Simple...
  • Very massive radio-loud and radio-quiet AGN

    The main objective of this work is to establish and interpret the dominant spectral components and their differences in radio-loud (RL) and radio-quiet (RQ) AGN with very...
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