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XRISM forecast for the Coma cluster: stormy, with a steep power spectrum
XRISM Collaboration, Marc Audard, Hisamitsu Awaki +142
The XRISM Resolve microcalorimeter array measured the velocities of hot intracluster gas at two positions in the Coma galaxy cluster: 3'x3' squares at the center and at 6' (170 kpc…
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…
Evidence for Charge Exchange Emission in Supernova Remnant N132D from XRISM/Resolve Observations
Liyi Gu, Hiroya Yamaguchi, Adam Foster +24
XRISM has delivered one of its first light observations on N132D, the X-ray brightest supernova remnant in the Large Magellanic Cloud. Utilizing 193 ks of high-resolution X-ray spe…
Study of the origin of the azimuthal variation of synchrotron X-ray spectrum from SNR RX J0852.0-4622
Dai Tateishi, Nobuaki Sasaki, Yukikatsu Terada +5
We report the azimuthal distribution of the X-ray energy spectrum of non-thermal dominant supernova remnant RX J0852.04622. The X-rays from the shock region observed by the X-ra…
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 (…
Overionized plasma in the supernova remnant Sagittarius A East anchored by XRISM observations
XRISM Collaboration
Sagittarius A East is a supernova remnant with a unique surrounding environment, as it is located in the immediate vicinity of the supermassive black hole at the Galactic center, S…
The XRISM/Resolve view of the Fe K region of Cyg X-3
XRISM Collaboration
The X-ray binary system Cygnus X-3 (4U 2030+40, V1521 Cyg) is luminous but enigmatic owing to the high intervening absorption. High-resolution X-ray spectroscopy uniquely probes th…
Time evolution of the synchrotron X-ray emission in Kepler's SNR: the effects of turbulence and shock velocity
Vincenzo Sapienza, Marco Miceli, Oleh Petruk +5
The maximum energy of electrons in supernova remnant (SNR) shocks is typically limited by radiative losses, where the synchrotron cooling time equals the acceleration time. The low…
Probing Shocked Ejecta in SN 1987A with XRISM-Resolve: the effects of the gate valve closed
Vincenzo Sapienza, Marco Miceli, Aya Bamba +10
Supernova (SN) 1987A is widely regarded as an excellent candidate for leveraging the capabilities of the freshly launched XRISM satellite. Recent researches indicate that the X-ray…
Measurement of Temperature Relaxation in the Postshock Plasma of the Northwestern Limb of SN 1006
Masahiro Ichihashi, Aya Bamba, Yuichi Kato +5
Heating of charged particles via collisionless shocks, while ubiquitous in the universe, is an intriguing yet puzzling plasma phenomenon. One outstanding question is how electrons…
Three-Dimensional Velocity Diagnostics to Constrain the Type Ia Origin of Tycho's Supernova Remnant
Hiroyuki Uchida, Tomoaki Kasuga, Keiichi Maeda +3
While various methods have been proposed to disentangle the progenitor system for Type Ia supernovae, their origin is still unclear. Circumstellar environment is a key to distingui…
Probing Shocked Ejecta in SN 1987A: A novel diagnostic approach using XRISM-Resolve
Vincenzo Sapienza, Marco Miceli, Aya Bamba +10
Supernova (SN) 1987A is one of the best candidates to exploit the capabilities of the freshly launched XRISM satellite. This celestial object offers the unique opportunity to study…
The High Energy X-ray Probe (HEX-P): Supernova remnants, pulsar wind nebulae, and nuclear astrophysics
Stephen Reynolds, Hongjun An, Moaz Abdelmaguid +29
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging ( full width at half maximum) and broad spectral coverage (0.2--80 keV) with an…
The High Energy X-ray Probe (HEX-P): Galactic PeVatrons, star clusters, superbubbles, microquasar jets, and gamma-ray binaries
Kaya Mori, Stephen Reynolds, Hongjun An +32
HEX-P is a probe-class mission concept that will combine high spatial resolution X-ray imaging (<10" FWHM) and broad spectral coverage (0.2-80 keV) with an effective area far super…
Observational constraints on the maximum energies of accelerated particles in supernova remnants
Hiromasa Suzuki, Aya Bamba, Ryo Yamazaki +1
Supernova remnants (SNRs) are thought to be the most plausible sources of Galactic cosmic rays. One of the principal questions is whether they are accelerating particles up to the…
Detection of the 2021 Outburst of RS Ophiuchi with the LST-1
Yukiho Kobayashi, Arnau Aguasca-Cabot, María Isabel Bernardos Martín +2
Novae are luminous explosions in close binaries which host a white dwarf and a companion donor star. They are triggered by a thermonuclear runaway when the white dwarf accretes a c…
On the influence of shock-cloud interactions on the nonthermal X-ray emission from the supernova remnant RCW 86
Aya Bamba, Hidetoshi Sano, Ryo Yamazaki +1
It is an open issue how the surrounding environment of supernova remnant shocks affect nonthermal X-rays from accelerated electrons, with or without interacting dense material. We…
Performance of the Large-Sized Telescope prototype of the Cherenkov Telescope Array
Daniel Morcuende, Rubén López-Coto, Abelardo Moralejo +2
The next-generation ground-based gamma-ray Cherenkov Telescope Array Observatory (CTAO) will consist of imaging atmospheric Cherenkov telescopes (IACTs) of three different sizes di…
LST-1 observations of an enormous flare of BL Lacertae in 2021
Seiya Nozaki, Katsuaki Asano, Juan Escudero +2
The first prototype of LST (LST-1) for the Cherenkov Telescope Array has been in commissioning phase since 2018 and already started scientific observations with the low energy thre…
Unraveling the Effects of Dense Medium on a Near to Bohm-Limit Acceleration in Kepler's SNR
Vincenzo Sapienza, Marco Miceli, Oleh Petruk +4
The maximum energy of electrons accelerated by supernova remnants (SNR) is typically limited by radiative losses. In this scenario, the synchrotron cooling time scale is equal to t…
Observations of the Crab Nebula and Pulsar with the Large-Sized Telescope Prototype of the Cherenkov Telescope Array
CTA-LST Project, :, H. Abe +289
CTA (Cherenkov Telescope Array) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. The Large-Sized Telescope prototype (LST-1) is locate…
XMM-Newton observations of the TeV-discovered supernova remnant HESS J1534-571
N. T. Nguyen-Dang, G. Pühlhofer, M. Sasaki +3
We report the results obtained from XMM-Newton observations of the TeV-detected supernova remnant (SNR) HESS J1534-571. We focus on the nature of the cosmic-ray particle content in…
A broadband X-ray imaging spectroscopy in the 2030s: the FORCE mission
Koji Mori, Takeshi G. Tsuru, Kazuhiro Nakazawa +49
In this multi-messenger astronomy era, all the observational probes are improving their sensitivities and overall performance. The Focusing on Relativistic universe and Cosmic Evol…
Multiwavelength studies of G298.60.0: An old GeV supernova remnant interacting with molecular clouds
Paul K. H. Yeung, Aya Bamba, Hidetoshi Sano
Hadronic -ray sources associated with supernova remnants (SNRs) can serve as stopwatches for the escape of cosmic rays from SNRs, which gradually develops from highest-energy pa…