A dataset provided by the European Space Agency

Name: A relativistic iron line in the X-ray spectrum of the atoll source 4U 1705-44?
Published: 2007-09-25T00:00:00Z
License: https://creativecommons.org/licenses/by-nc/3.0/igo

Proposal ID	040230
Title	A relativistic iron line in the X-ray spectrum of the atoll source 4U 1705-44?
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0402300201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0402300301
DOI	https://doi.org/10.5270/esa-i0ihdtn
Principal Investigator, PI	Prof Giorgio Matt
Abstract	We propose to observe with XMM-Newton in AO5 the atoll source 4U 1705-44. The$Chandra$ observation of this source clearly indicates the presence of a broad(sigma about 0.7 keV) iron line. Both a relativistic disk line and a thermalComptonization broadening fit well the line profile. The superior sensitivity atthe iron line energy of XMM-Newton is needed to give a definite answer to theproblem of the origin of the broad iron line.
Publications	A self-consistent approach to the hard and soft states of 4U 1705-44 \|DAi A. di Salvo T. et al. \| A&A \| 516-36 \| 2010 \| 2010A&A...516A..36D \| http://ui.adsabs.harvard.edu/#abs/2010A&A...516A..36D A systematic analysis of the broad iron Kalpha line in neutron-star LMXBs with XMM-Newton \|Ng C. Diaz Trigo M. et al. \| A&A \| 522-96 \| 2010 \| 2010A&A...522A..96N \| http://ui.adsabs.harvard.edu/#abs/2010A&A...522A..96N Relativistic Lines and Reflection from the Inner Accretion Disks Around Neutron Stars \|Cackett Edward M. Miller Jon M. et al. \| ApJ \| 720-205 \| 2010 \| 2010ApJ...720..205C \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...720..205C Testing reflection features in 4U 1705-44 with XMM-Newton BeppoSAX and RXTE in the hard and soft states \|Egron E. Di Salvo T. et al. \| A&A \| 550-5 \| 2013 \| 2013A&A...550A...5E \| http://ui.adsabs.harvard.edu/#abs/2013A&A...550A...5E X-ray diagnostics of chemical composition of the accretion disc and donor star in UCXBs - II. XMM-Newton observations \|Koliopanos Filippos Gilfanov Marat et al. \| MNRAS \| 442-2817 \| 2014 \| 2014MNRAS.442.2817K \| http://ui.adsabs.harvard.edu/#abs/2014MNRAS.442.2817K Investigating the mass of the intermediate mass black hole candidate HLX-1 with the slimbh model \|Straub Odele Godet Olivier et al. \| A&A \| 569-116 \| 2014 \| 2014A&A...569A.116S \| http://ui.adsabs.harvard.edu/#abs/2014A&A...569A.116S Revealing the broad iron Kalpha line in Cygnus X-1 through simultaneous XMM-Newton RXTE and INTEGRAL observations \|Duro Refiz Dauser Thomas et al. \| A&A \| 589-14 \| 2016 \| 2016A&A...589A..14D \| http://ui.adsabs.harvard.edu/#abs/2016A&A...589A..14D Relativistic Disc Line: A Tool to Constrain Neutron Star Equation of State Models \|Bhattacharyya Sudip \| JApA \| 38-38 \| 2017 \| 2017JApA...38...38B \| http://ui.adsabs.harvard.edu/#abs/2017JApA...38...38B X-ray diagnostics of ultra-compact X-ray binaries \|Koliopanos Filippos \| PhDT \| 0-593 \| 2015 \| 2015PhDT.......593K \| http://ui.adsabs.harvard.edu/#abs/2015PhDT.......593K
Instrument	EMOS1, EMOS2, EPN, RGS1, RGS2
Temporal Coverage	2006-08-26T04:44:46Z/2006-08-26T17:29:38Z
Version	21.51_20241115_1113
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2007-09-25T00:00:00Z
Last Update	2026-07-09
Keywords	"relativistic disk line", "line profile", "iron line energy", "XMM-Newton", "superior sensitivity", "relativistic iron line", "XMM", "broad iron line", "xray spectrum", "kev iron line", "definite answer", "xmm newton", "broad sigma"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Giorgio Matt, 2007, 'A relativistic iron line in the X-ray spectrum of the atoll source 4U 1705-44?', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-i0ihdtn
Rights	Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.