Search Publications
Mid-infrared and X-ray luminosity correlations of X-ray point sources in NGC 1399
Shalima, P.; Jithesh, V.; Jeena, K. +5 more
It is known that the infrared (IR) and X-ray luminosities of active galactic nuclei (AGN) are correlated with LIR ∼ LX. Moreover, the IR flux ratio between the 5.8 and 3.6 µm bands is a good distinguishing characteristic of AGN or AGN-like behaviour. On the other hand, Galactic X-ray binaries (GXB) are underluminous in …
A family of cometary globules at the periphery of Cyg OB1: the star HBHA 3703-01 and the reflection nebula GM 2-39
Lozinskaya, T. A.; Arkhipova, V. P.; Egorov, O. V. +7 more
The interstellar medium in the region of a family of cometary globules including the reflection nebula GM 2-39 has been analysed based on our observations with a slit spectrograph, the results of our previous observations with a Fabry-Perot interferometer in the Hα line and Spitzer archival data (Hora et al.), together with CO microwave data (Leun…
Investigating the Core Morphology-Seyfert Class Relationship with Hubble Space Telescope Archival Images of Local Seyfert Galaxies
Kim, Hwihyun; Rutkowski, M. J.; Windhorst, R. A. +2 more
The unified model of active galactic nuclei (AGNs) has provided a successful explanation for the observed diversity of AGNs in the local universe. However, recent analysis of multi-wavelength spectral and image data suggests that the unified model is only a partial theory of AGNs, and may need to be augmented to remain consistent with all observat…
Some results on the radio-SZ correlation for galaxy cluster radio halos
Basu, K.
We present correlation results for the radio halo power in galaxy clusters with the integrated thermal Sunyaev-Zel'dovich (SZ) effect signal, including new results obtained at sub-GHz frequencies. The radio data is compiled from several published works, and the SZ measurements are taken from the Planck ESZ cluster catalog. The tight correlation be…
The Sub-surface Structure of a Large Sample of Active Regions
Bogart, R. S.; Basu, S.; Baldner, C. S.
We employ ring-diagram analysis to study the sub-surface thermal structure of active regions. We present results using a large number of active regions over the course of Solar Cycle 23. We present both traditional inversions of ring-diagram frequency differences, with a total sample size of 264, and a statistical study using Principal Component A…
The preferentially magnified active nucleus in IRAS F10214+4724 - I. Lens model and spatially resolved radio emission
Heywood, I.; Serjeant, S.; Deane, R. P. +5 more
This is the first paper in a series that presents a multiwavelength analysis of the archetype ultraluminous infrared galaxy IRAS F10214+4724, a gravitationally lensed, starburst/active galactic nucleus at z = 2.3. Here we present a new lens model and spatially resolved radio data, as well as a deep Hubble Space Telescope (HST) F160W map. The lens …
Dust properties of clumpy disc galaxies at z ∼ 1.3 with Herschel-SPIRE
Glazebrook, Karl; Blake, Chris; Wisnioski, Emily +1 more
We present the far-infrared-derived dust properties from Herschel Spectral and Photometric Imaging Receiver of the WiggleZ kinematic sample of 13 star-forming galaxies at z ∼ 1.3, with existing ancillary ∼kpc resolution integral field spectroscopy. We detect three galaxies individually and place limits on the remainder by stacking. The detected ga…
SDSS J002531.46-104022.2 at z = 0.30: a candidate for the (ultra)luminous infrared galaxy to optical quasar transition
Villar-Martín, M.; Drouart, G.; Emonts, B. +2 more
Using data obtained with the Australia Telescope Compact Array (ATCA), we have characterized the amount, spatial distribution and kinematics of the molecular gas in the merging, double-nucleus type 2 quasar (QSO) SDSS J002531.46-104022.2 (hereafter SDSS J0025-10) at z = 0.30 using the CO(1-0) transition. This is one of the scarce examples of quasa…
Observations of Sy2 galaxy NGC 3281 by XMM-Newton and INTEGRAL satellites
Vasylenko, A. A.; Fedorova, E.; Zhdanov, V. I.
We present the results of the analysis of X-ray properties of the Seyfert 2 galaxy NGC 3281, based on the observational data obtained by XMM-Newton and INTEGRAL within the energy ranges 0.2-12 keV and 20-150 keV, respectively. The XMM-Newton spectrum of this object is presented for the first time. We show that fitting the X-ray spectrum of this ga…
X-ray emission from RX J1720.1+2638 and Abell 267: A comparison between a fossil and a non-fossil system
Jiménez-Bailón, E.; Aguerri, J. A. L.; Lozada-Muñoz, M.
We present the XMM-Newton X-ray analysis of RX J1720.1+2638 and Abell 267, a non-fossil and a fossil system, respectively. The whole spectrum of both objects can be explained by thermal emission. The luminosities found for RX J1720.1+2638 and Abell 267 in the 2-10 keV band are 6.20+0.04-0.02{×}1044 and 3.90+0.…