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Showing 1–5 of 5 results
Advanced filters: Author: Dheeraj R. Pasham Clear advanced filters

  • The discovery of two stable peaks at frequencies with a ratio of 3:2 in the power spectrum of X-ray emission from the brightest X-ray source in galaxy M82 suggests that, if the relationship between frequency and mass that holds for stellar-mass black holes can be extended to intermediate masses, the black hole believed to be the source of the emission has a mass approximately 400 times that of the Sun.

    • Dheeraj R. Pasham
    • Tod E. Strohmayer
    • Richard F. Mushotzky
    Research
    Nature
    Volume: 513, P: 74-76

  • The accretion disk from a star tidally disrupted by a supermassive black hole undergoes Lense–Thirring precession with strong, quasi-periodic X-ray flux and temperature modulations.

    • Dheeraj R. Pasham
    • Michal Zajaček
    • Michael Loewenstein
    ResearchOpen Access
    Nature
    Volume: 630, P: 325-328

  • Multiwavelength observations of a galactic nucleus exhibit quasi-periodic X-ray eruptions (QPEs) that repeat every 22 days, a timescale intermediate between those of other QPEs and so-called repeating nuclear transients. The eruptions are likely to be driven by the interaction between an orbiting body and a central massive black hole.

    • Muryel Guolo
    • Dheeraj R. Pasham
    • Elizabeth C. Ferrara
    Research
    Nature Astronomy
    Volume: 8, P: 347-358