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Out of the Chorus Line: What Makes 1E 1207.4–5209 a Unique Object?

Published online by Cambridge University Press:  19 July 2016

Andrea De Luca ,
Patrizia Caraveo ,
Sandro Mereghetti ,
Michele Moroni ,
Giovanni Bignami  and
Roberto Mignani
Andrea De Luca
Affiliation:
Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Milano “G. Occhialini” — CNR, Via Bassini 15, I-20133 Milano, Italy
Patrizia Caraveo
Affiliation:
Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Milano “G. Occhialini” — CNR, Via Bassini 15, I-20133 Milano, Italy
Sandro Mereghetti
Affiliation:
Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Milano “G. Occhialini” — CNR, Via Bassini 15, I-20133 Milano, Italy
Michele Moroni
Affiliation:
Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Milano “G. Occhialini” — CNR, Via Bassini 15, I-20133 Milano, Italy
Giovanni Bignami
Affiliation:
Centre d'Etude Spatiale des Rayonnements, Toulouse, France Università degli Studi di Pavia, Via Ugo Bassi, 6 — Pavia, Italy
Roberto Mignani
Affiliation:
European Southern Observatory, D-85740, Garching, Germany

Abstract

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The discovery of deep spectral features in the X-ray spectrum of 1E 1207.4–5209 has pushed this Isolated Neutron Star (INS) out of the chorus line, since no other INS has shown significant features in its X-ray continuum. On 2002 Aug, XMM-Newton devoted a two-orbit target-of-opportunity observation to this target, with the aim of better understanding the nature of such spectral features using much improved statistics. Indeed, the 260 ksec observation yielded 360 000 photons from 1E 1207.4–5209, allowing for a very sensitive study of the temporal and spectral behavior of this object.

Type
Part 5: Magnetars, Central Compact Objects and Isolated Neutron Stars
Information
Symposium - International Astronomical Union , Volume 218: Young Neutrons Stars and their Environments , 2004 , pp. 273 - 276
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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