EP260321a is identified as the faintest shock breakout X-ray transient associated with broad-lined Ic supernova SN 2026gzf, interpreted as originating from a mildly relativistic weak outflow choked inside the progenitor star.
Properties of the Galactic population of cataclysmic variables in hard X-rays
2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We measure the spatial distribution and hard X-ray luminosity function of cataclysmic variables (CVs) using the INTEGRAL all-sky survey in the 17-60 keV energy band. The vast majority of the INTEGRAL detected CVs are intermediate polars with luminosities in the range 10^{32}-10^{34} erg/sec. The scale height of the Galactic disk population of CVs is found to be 130{+90}{-50} pc. The CV luminosity function measured with INTEGRAL in hard X-rays is compatible with that previously determined at lower energies (3--20 keV) using a largely independent sample of sources detected by RXTE (located at |b|>10deg as opposed to the INTEGRAL sample, strongly concentrated to the Galactic plane). The cumulative 17-60 keV luminosity density of CVs per unit stellar mass is found to be (1.3+/-0.3)x10^{27} erg/sec/Msun and is thus comparable to that of low-mass X-ray binaries in this energy band. Therefore, faint but numerous CVs are expected to provide an important contribution to the cumulative hard X-ray emission of galaxies.
fields
astro-ph.HE 2years
2026 2representative citing papers
IGR J20084+3221 is an intermediate polar with white-dwarf spin period 635.0 ± 0.4 s and mass 1.09^{+0.12}_{-0.11} M_⊙, ruled out as an HMXB by faint IR and accretion-disk optical lines.
citing papers explorer
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EP260321a/SN 2026gzf: The Faintest Shock Breakout Associated with a Broad-Lined Supernova
EP260321a is identified as the faintest shock breakout X-ray transient associated with broad-lined Ic supernova SN 2026gzf, interpreted as originating from a mildly relativistic weak outflow choked inside the progenitor star.
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Classification of IGR J20084+3221 as an Intermediate Polar using X-ray and Optical Observations
IGR J20084+3221 is an intermediate polar with white-dwarf spin period 635.0 ± 0.4 s and mass 1.09^{+0.12}_{-0.11} M_⊙, ruled out as an HMXB by faint IR and accretion-disk optical lines.