output
19932026
most citedPrimordial Black Hole Scenario for the Gravitational-Wave Event GW150914

934 citations

Showing 2025 · astro-ph.HEShow all

12 papers · 2 filters

astro-ph.HE2025★ 5 cited

Chlorine and Potassium Enrichment in the Cassiopeia A Supernova Remnant

XRISM collaboration

The elements in the universe are synthesized primarily in stars and supernovae, where nuclear fusion favors the production of even-Z elements. In contrast, odd-Z elements are less…

astro-ph.HE2025

Decadal brightening in the northeastern non-thermal filament of Cassiopeia A

Nao Kominato, Toshiki Sato, Yusuke Sakai +2

We present the decadal brightening of non-thermal emission flux in the northeastern filament of the young supernova remnant Cassiopeia A (Cas A), which highlights dynamic processes…

astro-ph.HE2025★ 10 cited

Stratified wind from a super-Eddington X-ray binary is slower than expected

XRISM collaboration, Marc Audard, Hisamitsu Awaki +132

Accretion discs in strong gravity ubiquitously produce winds, seen as blueshifted absorption lines in the X-ray band of both stellar mass X-ray binaries (black holes and neutron st…

astro-ph.HE2025★ 2 cited

First Detection of X-ray Polarization and Its Short-term Increase Pre- and Post-Eclipse in HMXB 4U 1700-377

Kaito Ninoyu, Keisuke Uchiyama, Shinya Yamada +9

We report the first statistically significant detection of X-ray polarization from the high-mass X-ray binary (HMXB) 4U 1700-377, observed using the Imaging X-ray Polarimetry Explo…

astro-ph.HE2025★ 12 cited

Delving into the depths of NGC 3783 with XRISM II. Cross-calibration of X-ray instruments used in the large, multi-mission observational campaign

XRISM collaboration

Accurate X-ray spectroscopic measurements are fundamental for deriving basic physical parameters of the most abundant baryon components in the Universe. The plethora of X-ray obser…

astro-ph.HE2025★ 4 cited

Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG

Yusuke Sakai, Shinya Yamada, Haruka Sakemi +5

We present a spatial and spectral analysis of arcsecond-scale X-ray emission in SS 433 using zeroth-order data from Chandra High-Energy Transmission Grating (HETG) observations. Th…

astro-ph.HE2025

XRISM Spectroscopy of the Stellar-Mass Black Hole 4U 1630-472 in Outburst

Jon M. Miller, Misaki Mizumoto, Megumi Shidatsu +23

We report on XRISM/Resolve spectroscopy of the recurrent transient and well-known black hole candidate 4U 1630472 during its 2024 outburst. The source was captured at the end of…

astro-ph.HE2025★ 49 cited

Structured ionized winds shooting out from a quasar at relativistic speeds

XRISM collaboration

Evidence indicates that supermassive black holes exist at the centers of most galaxies. Their mass correlates with the galactic bulge mass, suggesting a co-evolution with their hos…

astro-ph.HE2025

Mapping Cassiopeia A's silicon/sulfur Doppler velocities with XRISM-Resolve

Jacco Vink, Manan Agarwal, Aya Bamba +22

Young supernova remnants (SNRs) provide crucial insights into explosive nucleosynthesis products and their velocity distribution soon after the explosion. However, these velocities…

astro-ph.HE2025

Measuring the asymmetric expansion of the Fe ejecta of Cassiopeia A with XRISM/Resolve

Aya Bamba, Manan Agarwal, Jacco Vink +24

The expansion structure of supernova remnants (SNRs) is important for understanding not only how heavy elements are distributed into space, but also how supernovae explode. The eje…

astro-ph.HE2025★ 4 cited

Detection of molecular clouds in the PeVatron candidate source LHAASO J03415258 by the Nobeyama 45-m radio telescope

Naomi Tsuji, Shunya Takekawa, Kaya Mori +8

We report a new CO observation survey of LHAASO J03415258 using the Nobeyama Radio Observatory (NRO) 45-m telescope. LHAASO J03415258 is one of the unidentified ultra-high-en…

astro-ph.HE2025★ 43 cited

The bulk motion of gas in the core of the Centaurus galaxy cluster

XRISM collaboration

Galaxy clusters, the largest gravitationally bound structures in the Universe, contain vast amounts of dark matter, galaxies, and hot ionised gas known as the intracluster medium (…