Cosmological constraints from the virial mass function of nearby galaxy groups and clusters by Hill, James Colin

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X-ray Observations of Planetary Nebulae since WORKPLANS I and Beyond by Martín A. Guerrero

“…Planetary nebulae (PNe) were expected to be filled with hot pressurized gas driving their expansion. <i>ROSAT</i> hinted at the presence of diffuse X-ray emission from these hot bubbles and detected the first sources of hard X-ray emission from their central stars, but it was not until the advent of <i>Chandra</i> and <i>XMM-Newton</i> that we became able to study in detail their occurrence and physical properties. …”
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Jet propulsion of wind ejecta from a major flare in the black hole microquasar SS433 by Blundell, K, Hirst, P

“…Successive instances of such bow-ties may be responsible for the large-scale X-ray cones observed across the W50 nebula by ROSAT.…”

Second-order Fermi acceleration as the origin of the Fermi bubbles by Mertsch, P, Sarkar, S

“…Gamma-ray data from Fermi-LAT show a bi-lobular structure extending up to 50°above and below the Galactic centre, coincident with a possibly related structure in the ROSAT X-ray map which presumably originated in some energy release close to the centre a few million years ago. …”

Second-order Fermi acceleration as the origin of the Fermi bubbles by Mertsch, P, Sarkar, S

“…Gamma-ray data from Fermi-LAT show a bi-lobular structure extending up to 50° above and below the Galactic centre, coincident with a possibly related structure in the ROSAT X-ray map which presumably originated in some energy release close to the centre a few million years ago. …”

Models of decelerating relativistic jets in 3C 31 by Laing, R, Bridle, A

“…We use this velocity variation, together with the formulation of conservation of particle number, energy and momentum given by Bicknell (1994), to calculate the physical parameters of the flow. ROSAT observations constrain the external pressure distribution, allowing us to derive unique solutions for pressure, density, Mach number and mass flux as functions of distance from the nucleus. …”

2nd-order Fermi acceleration as the origin of the Fermi bubbles by Mertsch, P, Sarkar, S

“…Gamma-ray data from Fermi-LAT show a bi-lobular structure extending up to 50 degrees above and below the Galactic centre, coincident with a possibly related structure in the ROSAT X-ray map which presumably originated in some energy release close to the centre a few million years ago. …”

Abell 2256 - Observing a Mpc(3) nonthermal laboratory by Clarke, T, Ensslin, T

“…Evidence of this merger is seen in the X-ray substructure of ROSAT images (Briel et al. 1991). Radio images reveal the complex nature of this cluster: a synchrotron halo, several head-tail radio galaxies, and two extended irregular and sharp-edged regions of diffuse radio emission - so called radio relics (Fig. 1). …”

Detection of a cosmic microwave background decrement toward the z=3.8 quasar pair PC 1643+4631A, B by Jones, M, Saunders, R, Baker, J, Cotter, G, Edge, A, Grainge, K, Haynes, T, Lasenby, A, Pooley, G, Rottgering, H

“…Assuming this to be a Sunyaev-Zeldovich effect due to an intervening cluster, the minimum magnitude of the central temperature decrement is 560 μK. A serendipitous ROSAT observation shows that there is no X-ray-luminous cluster in the direction of the decrement at z &lt; 1. …”

Stellar-mass black hole binaries as ULXs by Rappaport, S, Podsiadlowski, P, Pfahl, E

“…Ultraluminous X-ray sources (ULXs) with L-x &gt; 10(39) ergs s(-1) have been discovered in great numbers in external galaxies with ROSAT, Chandra, and XMM-Newton. The central question regarding this important class of sources is whether they represent an extension in the luminosity function of binary X-ray sources containing neutron stars and stellar-mass black holes (BHs), or a new class of objects, e.g., systems containing intermediate-mass black holes (100-1000 M-circle dot), We have carried out a theoretical study to test whether a large fraction of the ULXs, especially those in galaxies with recent star formation activity, can be explained with binary systems containing stellar-mass black holes. …”

Observability of HOFNARs at SRG/eROSITA by Alena D. Khokhriakova, Andrey I. Chugunov, Sergei B. Popov, Mikhail E. Gusakov, Elena M. Kantor

“…Temperatures ≳1.2 × 10⁶ K start to be in contradiction with non-detection of HOFNARs by ROSAT. Only for <i>T</i> ≲ 5 × 10⁵ K numbers predicted for eROSITA turn out to be so low that identification does not look possible. …”
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The relation between the diffuse X-ray luminosity and the radio power of the central AGN in galaxy groups by Pasini, T, Brueggen, M, de Gasperin, F, Birzan, L, O'Sullivan, E, Finoguenov, A, Whittam, IH, Heywood, I, Jarvis, M, Gitti, M, Brighenti, F, Collier, JD, Gozaliasl, G

“…For comparison, we have also built a control sample of 142 galaxy clusters using ROSAT and NVSS data. We find that clusters and groups follow the same correlation between X-ray and radio emission. …”

A Markedly Expanded Sample of Candidate X-Ray-emitting Isolated Neutron Stars by Sebastian Demasi, Scott F. Anderson, Marcel A. Agüeros

“…The current sample of 12 radio-quiet isolated neutron stars that emit strongly in X-rays (XINSs) is both small and heterogeneous, limiting its usefulness for understanding the physics of neutron star atmospheres and cooling rates and for constraining the equation of state of neutron degenerate matter. Utilizing the ROSAT 1RXS and 2RXS data sets, in conjunction with the Sloan Digital Sky Survey Data Release 17 and other companion multiwavelength surveys, we have extended previous searches for blank-field X-ray source candidate XINSs, ultimately recovering two known XINSs while identifying 46 new, unstudied candidate fields devoid of likely multiwavelength counterparts. …”
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A Long-Term Study of Ultraluminous X-ray Sources in NGC 891 by Nicholas M. Earley , Vikram V. Dwarkadas , Victoria Cirillo 

“…One of these sources was visible since the early 1990s with <i>ROSAT</i> and was observed multiple times with <i>Chandra</i> and <i>XMM-Newton</i>. …”
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Soft X-ray Excess in the Coma Cluster from a Cosmic Axion Background by Angus, S, Conlon, J, Marsh, M, Powell, A, Witkowski, LT

“…We study the morphology of the soft excess by numerically propagating axions through stochastic, multi-scale magnetic field models that are consistent with observations of Faraday rotation measures from Coma. By comparing to ROSAT observations of the 0.2-0.4 keV soft excess, we find that the overall excess luminosity is easily reproduced for $g_{a\gamma\gamma} \sim 2 \times 10^{-13}$ GeV$^{-1}$. …”

Stellar Mass Black Hole Binaries as ULXs by Rappaport, S, Podsiadlowski, P, Pfahl, E

“…Ultraluminous X-ray sources (ULXs) with Lx &gt; 10^{39} ergs/s have been discovered in great numbers in external galaxies with ROSAT, Chandra, and XMM. The central question regarding this important class of sources is whether they represent an extension in the luminosity function of binary X-ray sources containing neutron stars and stellar-mass black holes (BHs), or a new class of objects, e.g., systems containing intermediate-mass black holes (100-1000 Msun). …”

Models of the transition regions and coronae of late-type stars by Philippides, D, Despina A. Philippides

“…</p> <p>Alternative fits to X-ray spectra of ten late-type dwarfs from ROSAT are made using the latest available versions of the radiative power loss codes of Raymond and Smith, Landini and Monsignori Fossi, and Mewe <em>et al</em>.. …”

THE ATACAMA COSMOLOGY TELESCOPE: PHYSICAL PROPERTIES AND PURITY OF A GALAXY CLUSTER SAMPLE SELECTED VIA THE SUNYAEV-ZEL'DOVICH EFFECT by Menanteau, F, Gonzalez, J, Juin, J, Marriage, T, Reese, E, Acquaviva, V, Aguirre, P, Appel, J, Baker, A, Felipe Barrientos, L, Battistelli, E, Bond, JR, Das, S, Deshpande, A, Devlin, M, Dicker, S, Dunkley, J, Duenner, R, Essinger-Hileman, T, Fowler, J, Hajian, A, Halpern, M, Hasselfield, M, Hernandez-Monteagudo, C, Hilton, M

“…Archival observations from Chandra, XMM-Newton, and ROSAT provide X-ray luminosities and temperatures that are broadly consistent with this mass threshold. …”

A blind detection of a large, complex, Sunyaev-Zel'dovich structure by Shimwell, T, Barker, R, Biddulph, P, Bly, D, Boysen, R, Brown, A, Brown, M, Clementson, C, Crofts, M, Culverhouse, T, Czeres, J, Dace, R, Davies, M, D'Alessandro, R, Doherty, P, Duggan, K, Ely, J, Felvus, M, Feroz, F, Flynn, W, Franzen, T, Geisbüsch, J, Génova-Santos, R, Grainge, K, Grainger, W

“…No corresponding emission is visible in the ROSAT all-sky X-ray survey and no cluster is evident in the Palomar all-sky optical survey. …”

Planck intermediate results. VIII. Filaments between interacting clusters by Collaboration, P, Ade, P, Aghanim, N, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Balbi, A, Banday, A, Barreiro, R, Bartlett, J, Battaner, E, Benabed, K, Benoît, A, Bernard, J, Bersanelli, M, Bhatia, R, Bikmaev, I, Böhringer, H, Bonaldi, A, Bond, JR, Borrill, J, Bouchet, F, Bourdin, H

“…Using the Planck data we construct a local map of the tSZ effect centered on each pair of galaxy clusters. ROSAT data is used to construct X-ray maps of these pairs. …”