activity
19942026
most citedReconstructing the Cosmic Equation of State from Supernova distances

395 citations · 4.3k across the 120 of their papers we have counts for

collaborators
Showing astro-ph.HEShow all

7 papers · 1 filter

astro-ph.HE2026

A Serendipitous NuSTAR Detection of a Giant Radio Source Harboring an Obscured Active Galactic Nucleus

Vaidehi S. Paliya, S. Marchesi, X. Zhao +3

Giant radio sources (GRSs) harbor the Universe's largest structures generated by individual galaxies, with projected source sizes exceeding 700 kpc. These enigmatic objects have be…

astro-ph.HE2025

Ultraluminous X-ray sources in the group-centric elliptical galaxy NGC 5813

T. R. Rajalakshmi, Somak Raychaudhury, Indulekha Kavila +1

The number of Ultraluminous X-ray Sources (ULXs) is observed to be correlated with the current star formation rate in late-type galaxies and with the stellar mass in early-type gal…

astro-ph.HE2013★ 11 cited

The fading of two transient ULXs to below the stellar mass Eddington limit

Mark J. Burke, Ralph P. Kraft, Roberto Soria +10

We report new detections of the two transient ultraluminous X-ray sources (ULXs) in NGC 5128 from an ongoing series of Chandra observations. Both sources have previously been obser…

astro-ph.HE2013★ 7 cited

Spectral Properties of X-ray Binaries in Centaurus A

Mark J. Burke, Somak Raychaudhury, Ralph P. Kraft +19

We present a spectral investigation of X-ray binaries in NGC 5128 (Cen A), using six 100 ks Chandra observations taken over two months in 2007. We divide our sample into thermally…

astro-ph.HE2012★ 7 cited

A Transient Sub-Eddington Black Hole X-ray Binary Candidate in the Dust Lanes of Centaurus A

Mark J. Burke, Somak Raychaudhury, Ralph P. Kraft +18

We report the discovery of a bright X-ray transient, CXOU J132527.6-430023, in the nearby early-type galaxy NGC 5128. The source was first detected over the course of five Chandra…

astro-ph.HE2009★ 46 cited

Luminosity functions of LMXBs in Centaurus A: globular clusters versus the field

R. Voss, M. Gilfanov, G. R. Sivakoff +16

We study the X-ray luminosity function (XLF) of low mass X-ray binaries (LMXB) in the nearby early-type galaxy Centaurus A, concentrating primarily on two aspects of binary populat…