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Analyses of Chandra's first images of cooling flow clusters find smaller cooling rates than previously thought. Cooling may be occurring preferentially near regions of star formation in central cluster galaxies, where the local cooling and…

Astrophysics · Physics 2007-05-23 B. R. McNamara

We present a study of the X-ray properties of the nearby face-on Scd spiral galaxy M101 based on recent XMM-Newton observations. In this third and final paper in the present series, we focus on the spatial and spectral properties of the…

Astrophysics · Physics 2008-11-26 R. S. Warwick , L. P. Jenkins , A. M. Read , T. P. Roberts , R. A. Owen

Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks and producing a dynamic interstellar medium. On large scales bordering the cosmic web, feedback drives…

Stellar feedback is often cited as the biggest uncertainty in galaxy formation models today. This uncertainty stems from a dearth of observational constraints as well as the great dynamic range between the small scales (<1 pc) where the…

Solar and Stellar Astrophysics · Physics 2015-06-17 Laura A. Lopez , Mark R. Krumholz , Alberto D. Bolatto , J. Xavier Prochaska , Enrico Ramirez-Ruiz , Daniel Castro

The identification and tracking of stellar feedback-driven galaxy bubbles is an important topic in star formation and galactic structure research. However, current observational analysis of bubbles is limited in scope; information on bubble…

Astrophysics of Galaxies · Physics 2026-05-12 Aaron Angress , Michael M. Foley , Sarah M. R. Jeffreson , Alyssa Goodman , Lars Hernquist

Feedback to the interstellar medium (ISM) from ionising radiation, stellar winds and supernovae is central to regulating star formation in galaxies. Due to their low mass ($M_{*} < 10^{9}$\,M$_\odot$), dwarf galaxies are particularly…

Astrophysics of Galaxies · Physics 2022-05-17 Michelle L. M. Collins , Justin I. Read

Dwarf galaxies provide powerful laboratories for studying galaxy formation physics. Their early assembly, shallow gravitational potentials, and bursty, clustered star formation histories make them especially sensitive to the processes that…

Aims: We study the diffuse X-ray emission observed in the field of view of the pulsar B 0540-69 in the Large Magellanic Cloud (LMC) by XMM-Newton. We want to understand the nature of this soft diffuse emission, which coincides with the…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Manami Sasaki , Dieter Breitschwerdt , Verena Baumgartner , Frank Haberl

As the formation of cosmic structure continues to proceed, we observe one of the latest stages of this process in mergers of clusters of galaxies with other clusters, groups, and galaxies. The X-ray emitting hot plasma of these systems can…

High Energy Astrophysical Phenomena · Physics 2023-04-05 John ZuHone , Yuanyuan Su

We present CHANDRA X-ray data of the nearby Magellanic Irregular dwarf starburst galaxy NGC4449. Contributions to the X-ray emission come from discrete point sources and extended diffuse emission. The extended emission has a complex…

Astrophysics · Physics 2009-11-07 Lesley K. Summers , Ian R. Stevens , David K. Strickland , Timothy M. Heckman

The spatial decorrelation of dense molecular gas and young stars observed on $\lesssim 1$ kiloparsec scales in nearby galaxies indicates rapid dispersal of star-forming regions by stellar feedback. We explore the sensitivity of this…

Astrophysics of Galaxies · Physics 2021-09-15 Vadim A. Semenov , Andrey V. Kravtsov , Nickolay Y. Gnedin

This white paper is motivated by open questions in star formation, which can be uniquely addressed by high resolution X-ray imaging and require an X-ray observatory with large collecting area along good spectral resolution. A complete…

In order to trace the instantaneous star formation rate at high redshift, and hence help understanding the relation between the different emission mechanisms related to star formation, we combine the recent 4 Ms Chandra X-ray data and the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 S. Vattakunnel , P. Tozzi , F. Matteucci , P. Padovani , N. Miller , M. Bonzini , V. Mainieri , M. Paolillo , L. Vincoletto , W. N. Brandt , B. Luo , K. I. Kellermann , Y. Q. Xue

High resolution observations of cluster of galaxies by Chandra have revealed the existence of an X-ray emitting comet-like galaxy C153 in the core of cluster of galaxies A2125. The galaxy C153 moving fast in the cluster core has a distinct…

Astrophysics · Physics 2015-06-24 Naoki Asai , Naoya Fukuda , Ryoji Matsumoto

Using deep archival observations from the Chandra X-ray Observatory, we present an analysis of linear X-ray-emitting features located within the southern portion of the Galactic center chimney, and oriented orthogonal to the Galactic plane,…

High Energy Astrophysical Phenomena · Physics 2024-05-14 Scott C. Mackey , Mark R. Morris , Gabriele Ponti , Konstantina Anastasopoulou , Samaresh Mondal

The XA region of the Cygnus Loop is a bright knot of X-ray emission on the eastern edge of the supernova remnant resulting from the interaction of the supernova blast wave with density enhancements at the edge of a precursor formed cavity.…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Randall L. McEntaffer , Thomas Brantseg

We study the origin of unresolved X-ray emission from the bulge of M31 based on archival Chandra and XMM-Newton observations. We demonstrate that three different components are present: (i) Broad-band emission from a large number of faint…

Astrophysics · Physics 2008-07-09 A. Bogdan , M. Gilfanov

We relate the star formation from cold baryons in virialized structures to the X-ray properties of the associated diffuse, hot baryonic component. Our computations use the standard ``semi-analytic'' models to describe i) the evolution of…

Astrophysics · Physics 2009-10-31 N. Menci , A. Cavaliere

In the last eight years, the Chandra and XMM-Newton satellites changed significantly our view of X-ray clusters of galaxies. In particular, several complex phenomena have been directly observed: interactions between cluster galaxies and the…

Astrophysics · Physics 2007-08-06 Paolo Tozzi

We present a 1.42 square degree mosaic of diffuse X-ray emission in the Great Nebula in Carina from the Chandra X-ray Observatory Advanced CCD Imaging Spectrometer camera. After removing >14,000 X-ray point sources from the field, we smooth…

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