Swift Monitoring of M51: A 38 day Superorbital Period for the Pulsar ULX7 and a New Transient Ultraluminous X-Ray Source [PDF]
Astrophysical Journal, 2020 We present the results from a monitoring campaign made with the Neil Gehrels Swift Observatory of the M51 galaxies, which contain several variable ultraluminous X-ray sources (ULXs). The ongoing campaign started in 2018 May, and we report here on ∼1.5 yr
Murray Brightman +17 more
openalex +3 more sources
Discovery of strongly variable X-ray polarization in the neutron star low-mass X-ray binary transient XTE J1701−462 [PDF]
Astronomy & Astrophysics, 2023 After about 16 years since its first outburst, the transient neutron star low-mass X-ray binary XTE J1701$-$462 turned on again in September 2022, allowing for the first study of its X-ray polarimetric characteristics by a dedicated observing program ...
M. Cocchi +107 more
semanticscholar +1 more source
THE SWIFT/BAT HARD X-RAY TRANSIENT MONITOR [PDF]
, 2006 The Swift/Burst Alert Telescope (BAT) hard X-ray transient monitor provides near real-time coverage of the X-ray sky in the energy range 15–50 keV.
H. Krimm +16 more
semanticscholar +1 more source
THE 2003 OUTBURST OF THE X-RAY TRANSIENT H1743−322: COMPARISONS WITH THE BLACK HOLE MICROQUASAR XTE J1550−564 [PDF]
, 2007 The bright X-ray transient H1743−322 was observed daily by the Rossi X-ray Timing Explorer during most of its eight-month outburst in 2003. We present a detailed spectral analysis and a supporting timing analysis of all of these data, and we discuss the ...
J. McClintock +6 more
semanticscholar +1 more source
IGR J17544-2619: a new supergiant fast X-ray transient revealed by optical/infrared observations [PDF]
, 2006 One of the most recent discoveries of the INTEGRAL observatory is the existence of a previously unknown population of X-ray sources in the inner arms of the Galaxy. IGR J17544-2619, IGR J16465-4507 and XTE J1739-302 are among these sources.
L. Pellizza +3 more
semanticscholar +1 more source
The RS Oph Outburst of 2021 Monitored in X-Rays with NICER
The Astrophysical Journal, 2023 The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron Star Interior Composition Explorer Mission (NICER) in the 0.2–12 keV range from day one after the optical maximum, until day 88, producing an unprecedented, detailed ...
Marina Orio +21 more
doaj +1 more source
SPICES II. Optical and Near-Infrared Identifications of Faint X-Ray Sources from Deep Chandra Observations of Lynx [PDF]
, 2002 We present our first results on field X-ray sources detected in a deep, 184.7 ks observation with the ACIS-I camera on Chandra. The observations target the Lynx field of SPICES, and contains three known X-ray-emitting clusters out to z=1.27.
Chaffee, Frederic H. +12 more
core +2 more sources
The faint neutron star soft X-ray transient SAX J1810.8-2609 in quiescence [PDF]
, 2003 We present the analysis of a 35-ksec-long Chandra observation of the neutron star soft X-ray transient (SXT) SAX J1810.8-2609. We detect three sources in the field of view.
P. Jonker, R. Wijnands, M. Klis
semanticscholar +1 more source
Return of 4U 1730–22 after 49 yr Silence: The Outburst Properties Observed by NICER and Insight-HXMT
The Astrophysical Journal Letters, 2022 After 49 yr of quiescence, 4U 1730–22 became active and had two outbursts in 2021 and 2022; the onset and tail of the outbursts were observed by NICER, which give us a peerless opportunity to study the state transition and its underlying mechanism.
Yu-Peng Chen +12 more
doaj +1 more source
A Search for Hard X-Ray Emission from Globular Clusters - Constraints from BATSE [PDF]
, 1996 We have monitored a sample of 27 nearby globular clusters in the hard X-ray band (20-120 keV) for approximately 1400 days using the BATSE instrument on board the Compton Gamma-Ray Observatory.
Ford, E. +4 more
core +2 more sources