94 citations · 525 across the 19 of their papers we have counts for
19 papers
The Galactic plane at faint X-ray fluxes - II. Stacked X-ray spectra of a sample of serendipitous XMM-Newton sources
R. S. Warwick, K. Byckling, D. Pérez-Ramírez
We have investigated the X-ray spectral properties of a sample of 138 X-ray sources detected serendipitously in observations of the Galactic plane, at an intermediate…
Illuminating the Darkest Gamma-Ray Bursts with Radio Observations
B. A. Zauderer, E. Berger, R. Margutti +15
We present X-ray, optical, near-infrared, and radio observations of GRBs 110709B and 111215A, as well as optical and near-IR observations of their host galaxies. The combination of…
The Galactic Plane at faint X-ray fluxes - I: Properties and characteristics of the X-ray source population
R. S. Warwick, D. Perez-Ramirez, K. Byckling
We investigate the serendipitous X-ray source population revealed in XMM-Newton observations targeted in the Galactic Plane within the region 315<l<45 and |b|<2.5 deg. Our study fo…
A search for radio counterparts to Chandra ULX candidates
D. Perez-Ramirez, M. Mezcua, S. Leon +1
We present a systematic search for radio counterparts to Ultra Luminous X-ray (ULX) source candidates based on a cross-correlation of the Swartz et al. (2004) ULX catalogue based o…
XMM-Newton observations of the hot spot galaxy NGC 2903
D. Perez-Ramirez, M. D. Caballero-Garcia, J. Ebrero +1
We report on the first deeper X-ray broad-band observation of the hot spot galaxy NGC 2903 obtained with XMM-Newton. X-ray imaging and spectra of the spiral barred galaxy were obta…
Detection of the high z GRB 080913 and its implications on progenitors and energy extraction mechanisms
D. Perez-Ramirez, A. de Ugarte Postigo, J. Gorosabel +15
Aims: We present multiwavelength observations of one of the most distant gamma-ray bursts detected so far, GRB 080913. Based on these observations, we consider whether it could be…