The Parkes-MIT-NRAO surveys. IV - Maps for the Southern Survey covering delta in the range -88 to -37 deg

Condon, J. J.; Griffith, Mark R.; Wright, A. E.

doi:10.1086/116707

Cited by 92 publications

(95 citation statements)

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“…In The spectral values reported for Coma are only representative for the source extraction region (i.e., 10 around the BAT centroid; see Section for more details). Condon et al 1993; (6) Slee 1977; (7) Feretti et al 1997. order to estimate the magnetic field (see Section 3.1 and Table 3), we adopt the radio data from Brown & Burns (1991), based on the Parkes catalogue, namely a flux density S 2700 MHz = 1.070 Jy and a spectral index α = 0.95.…”

Section: A3266mentioning

confidence: 99%

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GALAXY CLUSTERS IN THESWIFT/BURST ALERT TELESCOPE ERA: HARD X-RAYS IN THE INTRACLUSTER MEDIUM

Ajello

Rebusco

Cappelluti

et al. 2008

ApJ

101

126

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We report the detection of 10 clusters of galaxies in the ongoing Swift/Burst Alert Telescope (BAT) all-sky survey. This sample, which mostly comprises merging clusters, was serendipitously detected in the 15-55 keV band. We use the BAT sample to investigate the presence of excess hard X-rays above the thermal emission. The BAT clusters do not show significant (e.g., 2σ ) nonthermal hard X-ray emission. The only exception is represented by Perseus whose high-energy emission is likely due to NGC 1275. Using XMM-Newton, Swift/XRT, Chandra and BAT data, we are able to produce upper limits of the inverse Compton (IC) emission mechanism which are in disagreement with most of the previously-claimed hard X-ray excesses. The coupling of the X-ray upper limits of the IC mechanism to radio data shows that, in some clusters, the magnetic field might be larger than 0.5 μG. We also derive the first log N-log S and luminosity function distributions of galaxy clusters above 15 keV.

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Section: A3266mentioning

confidence: 99%

“…Using a power law with a photon index of 2.0, we derive a 99% CL upper limit to nonthermal emission in the 50-100 keV band of 6.5 × 10 −13 erg cm −2 s −1 . Condon et al (1993) reported a 4.85 GHz radio source centered ∼ 7 away from the BAT centroid. They found an upper limit of 33 Jy.…”

Section: Triangulum Australismentioning

confidence: 99%

GALAXY CLUSTERS IN THESWIFT/BURST ALERT TELESCOPE ERA: HARD X-RAYS IN THE INTRACLUSTER MEDIUM

Ajello

Rebusco

Cappelluti

et al. 2008

ApJ

101

126

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“…The ionized gas distribution was analyzed using data at 4.85 GHz, extracted from the Parkes-MIT-NRAO (PMN) Southern Radio Survey (Condon et al 1993). This survey was obtained with an angular resolution of 4.…”

Section: Complementary Datamentioning

confidence: 99%

Unveiling the molecular environment of the ring nebula RCW 78

Cappa

Rubio

Martín

et al. 2009

A&A

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Aims. We present a study of the ionized, neutral atomic, and molecular gas associated with the ring nebula RCW 78 around the WR star HD 117688 (=WR 55) with the aim of analyzing the distribution of the associated gas and investigating its energetics. Methods. We base our study on 12 CO(1-0) and 12 CO(2-1) observations of the brightest section of the nebula carried out with the SEST telescope with angular resolutions of 45 and 22 , respectively; and on complementary 12 CO(1-0) data of a larger area obtained with the NANTEN telescope with an angular resolution of 2. 7, Hi 21-cm line data taken from the ATCA survey, IRAS HIRES data, and radio continuum data at 4.85 GHz from the Parkes survey. Results. We report the detection of molecular gas having velocities in the range -56 to -33 km s −1 associated with the western region of RCW 78. A few patches of molecular gas possibly linked to the eastern faint section are detected. The CO emission appears concentrated in a region of 23 × 18 in size, with a total molecular mass of (1.3 ± 0.5) × 10 5 M , mainly connected to the western section. The analysis of the neutral atomic gas distribution reveals the H i envelope of the molecular cloud, while the radio continuum emission shows a ring-like structure, which is the radio counterpart of the optical nebula. The gas distribution is compatible with the western section of RCW 78 having originated in the photodissociation and ionization of the molecular gas by the UV photons of the WN7 star HD 117688, and with the action of the stellar winds of the WR star on the surrounding gas. In this scenario, the interstellar bubble expanded more easily towards the east than towards the west due to the lack of dense molecular gas in the eastern section. The proposed scenario also explains the off center location of WR 55. A number of infrared point sources classified as YSO candidates showed that star formation activity is present in the molecular gas linked to the nebula. The possibility that the expansion of the bubble triggered star formation in this region cannot be discarded.

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“…Figure 9 (left) shows, in gray scale and contours, the radio image at 4.85 GHz (obtained from the survey of Condon, Broderick, Seielstad 1991, 1993, by means of the SkyView Advanced form facility 3 ), 3 See http://skyview.gsfc.nasa.gov/cgi-bin/skvadvanced.pl. 2 The Very Large Array of the National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. Fig.…”

Section: W44mentioning

confidence: 99%

“…The radio map at 4.85 GHz (obtained from Condon et al's 1991Condon et al's , 1993Condon et al's , 1994 surveys) has an angular resolution of 7 0 and is shown in Figure 10 (left). This radio image shows two bright arcs toward (Condon et al 1991(Condon et al , 1993(Condon et al , 1994. The gray scale corresponds to the range 40-550 mJy beam À1 , and the resolution is 7 0 .…”

Section: W44mentioning

confidence: 99%

Effects of Thermal Conduction on the X‐Ray and Synchrotron Emission from Supernova Remnants

Velázquez

Martinell

Raga

et al. 2004

ApJ

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Several physical mechanisms have been studied in order to explain why composite supernova remnants (SNRs) have shell-like morphologies in the radio continuum while their X-ray emission is centrally peaked. One of the proposed mechanisms has been the presence of thermal conduction, which can raise the density at the center of SNRs, increasing the X-ray emission from these regions. In this work, we have carried out axisymmetric numerical simulations with the adaptive grid Yguazú-a code, which includes advection of the magnetic field and thermal conduction. We have considered cases with anisotropic and isotropic thermal conduction, as well as with no conduction. We have simulated X-ray (as well as radio synchrotron) emission maps from our numerical simulations, which can be directly compared with observations.

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The Parkes-MIT-NRAO surveys. IV - Maps for the Southern Survey covering delta in the range -88 to -37 deg

Cited by 92 publications

References 0 publications

GALAXY CLUSTERS IN THESWIFT/BURST ALERT TELESCOPE ERA: HARD X-RAYS IN THE INTRACLUSTER MEDIUM

GALAXY CLUSTERS IN THESWIFT/BURST ALERT TELESCOPE ERA: HARD X-RAYS IN THE INTRACLUSTER MEDIUM

Unveiling the molecular environment of the ring nebula RCW 78

Effects of Thermal Conduction on the X‐Ray and Synchrotron Emission from Supernova Remnants

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