Journal ArticleDOI
Constraints on the distance to SGR 1806-20 from HI absorption
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TLDR
In this paper, a lower bound of 6.4 and 9.8 kpc was established for the luminosity of the SGR 1806-20 burst, which has previously been argued to be ~15 kpc.Abstract:
The giant flare detected from the magnetar SGR 1806-20 on 2004 December 27 had a fluence more than 100 times higher than the only two other SGR flares ever recorded. Whereas the fluence is independent of distance, an estimate for the luminosity of the burst depends on the source's distance, which has previously been argued to be ~15 kpc. The burst produced a bright radio afterglow, against which Cameron et al. (2005) have measured an HI absorption spectrum. This has been used to propose a revised distance to SGR 1806-20 of between 6.4 and 9.8 kpc. Here we analyze this absorption spectrum, and compare it both to HI emission data from the Southern Galactic Plane Survey and to archival 12-CO survey data. We confirm ~6 kpc, as a likely lower limit on the distance to SGR 1806-20, but argue that it is difficult to place an upper limit on the distance to SGR 1806-20 from the HI data currently available. The previous value of ~15 kpc thus remains the best estimate of the distance to the source.read more
Citations
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Journal ArticleDOI
A neutron star with a massive progenitor in westerlund 1
Michael P. Muno,J. Simon Clark,Paul A. Crowther,Sean M. Dougherty,Richard de Grijs,Casey J. Law,Stephen L. W. McMillan,Mark Morris,Ignacio Negueruela,David Pooley,Simon Portegies Zwart,Farhad Yusef-Zadeh +11 more
TL;DR: In this paper, the discovery of an X-ray pulsar in the young, massive Galactic star cluster Westerlund 1 was reported, which indicates that it is a magnetar.
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On pulsar distance measurements and their uncertainties
TL;DR: In this paper, a critical analysis of all measured H I distance limits to pulsars and other neutron stars, and translate these limits into actual distance estimates through a likelihood analysis that simultaneously corrects for statistical biases.
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Magnetar outbursts: an observational review
Nanda Rea,Paolo Esposito +1 more
TL;DR: In this article, the authors review the latest observational results on the multiband emission of magnetars, and summarize one by one all the transient events which could be studied to date from these sources.
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Magnetars as persistent hard X-ray sources: INTEGRAL discovery of a hard tail in SGR 1900+14
TL;DR: In this article, the authors used 2.5Ms of data obtained by the INTEGRAL satellite in 2003-2004, to discover persistent hard X-ray emission from the soft gamma-ray repeater SGR 1900+14.
Journal ArticleDOI
A strongly magnetized pulsar within the grasp of the milky way’s supermassive black hole
Nanda Rea,Paolo Esposito,José A. Pons,Roberto Turolla,Diego F. Torres,G. L. Israel,Andrea Possenti,Marta Burgay,Daniele Viganò,Alessandro Papitto,Rosalba Perna,Luigi Stella,Gabriele Ponti,Frederick K. Baganoff,Daryl Haggard,Ascension Camero-Arranz,Silvia Zane,Anthony H. Minter,Sandro Mereghetti,Andrea Tiengo,Rainer Schödel,Marco Feroci,Roberto Mignani,Roberto Mignani,D. Gotz +24 more
TL;DR: In this article, the authors acknowledge support by grants AYA 2012-39303, SGR2009-811, iLINK 2011-0303, AYA 2010-21097-C03-02, Prometeo 2009/103, P08-TIC-4075, INAF 2010 PRIN grant, Chandra Awards GO2-13076X, G03-14060X, GO3-14099X and G03 -14121X, and an EU Marie Curie IEF (FP7-PEOPLE-2012-IEF
References
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Journal ArticleDOI
Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts
TL;DR: In this article, it is argued that a convective dynamo can also generate a very strong dipole field after the merger of a neutron star binary, but only if the merged star survives for as long as about 10-100 ms.
Journal ArticleDOI
The Milky Way in Molecular Clouds: A New Complete CO Survey
TL;DR: In this article, a large-scale CO survey of the first and second Galactic quadrants and the nearby molecular cloud complexes in Orion and Taurus, obtained with the CfA 1.2 m telescope, was combined with 31 other surveys obtained over the past two decades with that instrument and a similar telescope on Cerro Tololo in Chile, to produce a new composite CO survey.
Journal ArticleDOI
An exceptionally bright flare from SGR 1806–20 and the origins of short-duration γ-ray bursts
Kevin Hurley,Steven E. Boggs,Steven E. Boggs,David M. Smith,Robert C. Duncan,Robert P. Lin,Andreas Zoglauer,Säm Krucker,G. J. Hurford,Hugh S. Hudson,C. Wigger,Wojtek Hajdas,Christopher Thompson,I. G. Mitrofanov,A. B. Sanin,William V. Boynton,C. Fellows,A. von Kienlin,G. G. Lichti,Arne Rau,T. L. Cline +20 more
TL;DR: In this article, the authors reported the detection of a long (380's) giant flare from SGR 1806-20, which was much more luminous than any previous transient event observed in our Galaxy.
Journal ArticleDOI
A giant γ-ray flare from the magnetar SGR 1806–20
David Palmer,Scott Barthelmy,Neil Gehrels,R.M. Kippen,T. Cayton,Chryssa Kouveliotou,David Eichler,Ralph A. M. J. Wijers,P. M. Woods,Jonathan Granot,Y. E. Lyubarsky,Enrico Ramirez-Ruiz,L. M. Barbier,M. M. Chester,Jay Cummings,Jay Cummings,E. E. Fenimore,Mark H. Finger,Bryan Gaensler,D. Hullinger,Hans A. Krimm,Hans A. Krimm,C. B. Markwardt,C. B. Markwardt,J. A. Nousek,A. M. Parsons,Sandeep K. Patel,T. Sakamoto,T. Sakamoto,Goro Sato,Masaya Suzuki,Jack Tueller +31 more
TL;DR: In this article, the authors reported that SGR1806-20, a soft γ-ray repeater in Sagittarius, released a giant flare that has been called the brightest explosion ever recorded.
Journal ArticleDOI
The Southern Galactic Plane Survey: H I Observations and Analysis
Naomi McClure-Griffiths,John M. Dickey,John M. Dickey,Bryan Gaensler,A. J. Green,M. Haverkorn,S. T. Strasser +6 more
TL;DR: The Southern Galactic Plane Survey (SGPS) as mentioned in this paper is a large-scale project to image at arcminute resolution the H I spectral line and 21 cm continuum emission in parts of the plane of the Milky Way.
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