DOAJ Open Access 2023

IXPE Observations of the Quintessential Wind-accreting X-Ray Pulsar Vela X-1

Sofia V. Forsblom Juri Poutanen Sergey S. Tsygankov Matteo Bachetti Alessandro Di Marco +96 lainnya

Abstrak

The radiation from accreting X-ray pulsars was expected to be highly polarized, with some estimates for the polarization degree of up to 80%. However, phase-resolved and energy-resolved polarimetry of X-ray pulsars is required in order to test different models and to shed light on the emission processes and the geometry of the emission region. Here we present the first results of the observations of the accreting X-ray pulsar Vela X-1 performed with the Imaging X-ray Polarimetry Explorer. Vela X-1 is considered to be the archetypal example of a wind-accreting, high-mass X-ray binary system, consisting of a highly magnetized neutron star accreting matter from its supergiant stellar companion. The spectropolarimetric analysis of the phase-averaged data for Vela X-1 reveals a polarization degree (PD) of 2.3% ± 0.4% at the polarization angle (PA) of −47.°3 ± 5.°4. A low PD is consistent with the results obtained for other X-ray pulsars and is likely related to the inverse temperature structure of the neutron star atmosphere. The energy-resolved analysis shows the PD above 5 keV reaching 6%–10% and a ∼90° difference in the PA compared to the data in the 2–3 keV range. The phase-resolved spectropolarimetric analysis finds a PD in the range 0%–9% with the PA varying between −80° and 40°.

Topik & Kata Kunci

Astrophysics

Penulis (101)

Sofia V. Forsblom

Juri Poutanen

Sergey S. Tsygankov

Matteo Bachetti

Alessandro Di Marco

Victor Doroshenko

Jeremy Heyl

Fabio La Monaca

Christian Malacaria

Herman L. Marshall

Fabio Muleri

Alexander A. Mushtukov

Maura Pilia

Daniele Rogantini

Valery F. Suleimanov

Roberto Taverna

Fei Xie

Iván Agudo

Lucio A. Antonelli

Luca Baldini

Wayne H. Baumgartner

Ronaldo Bellazzini

Stefano Bianchi

Stephen D. Bongiorno

Raffaella Bonino

Alessandro Brez

Niccolò Bucciantini

Fiamma Capitanio

Simone Castellano

Elisabetta Cavazzuti

Chien-Ting Chen

Stefano Ciprini

Enrico Costa

Alessandra De Rosa

Ettore Del Monte

Laura Di Gesu

Niccolò Di Lalla

Immacolata Donnarumma

Michal Dovčiak

Steven R. Ehlert

Teruaki Enoto

Yuri Evangelista

Sergio Fabiani

Riccardo Ferrazzoli

Javier A. Garcia

Shuichi Gunji

Kiyoshi Hayashida

Wataru Iwakiri

Svetlana G. Jorstad

Philip Kaaret

Vladimir Karas

Takao Kitaguchi

Jeffery J. Kolodziejczak

Henric Krawczynski

Luca Latronico

Ioannis Liodakis

Simone Maldera

Alberto Manfreda

Frédéric Marin

Andrea Marinucci

Alan P. Marscher

Giorgio Matt

Ikuyuki Mitsuishi

Tsunefumi Mizuno

Michela Negro

Chi-Yung Ng

Stephen L. O’Dell

Nicola Omodei

Chiara Oppedisano

Alessandro Papitto

George G. Pavlov

Abel L. Peirson

Matteo Perri

Melissa Pesce-Rollins

Pierre-Olivier Petrucci

Andrea Possenti

Simonetta Puccetti

Brian D. Ramsey

John Rankin

Ajay Ratheesh

Oliver J. Roberts

Roger W. Romani

Carmelo Sgrò

Patrick Slane

Paolo Soffitta

Gloria Spandre

Rashid A. Sunyaev

Douglas A. Swartz

Toru Tamagawa

Fabrizio Tavecchio

Yuzuru Tawara

Allyn F. Tennant

Nicholas E. Thomas

Francesco Tombesi

Alessio Trois

Roberto Turolla

Jacco Vink

Martin C. Weisskopf

Kinwah Wu

Silvia Zane

IXPE Collaboration

Format Sitasi

APA MLA BibTeX

Forsblom, S.V., Poutanen, J., Tsygankov, S.S., Bachetti, M., Marco, A.D., Doroshenko, V. et al. (2023). IXPE Observations of the Quintessential Wind-accreting X-Ray Pulsar Vela X-1. https://doi.org/10.3847/2041-8213/acc391

@article{forsblom2023, author = {Sofia V. Forsblom and Juri Poutanen and Sergey S. Tsygankov and Matteo Bachetti and Alessandro Di Marco and Victor Doroshenko and Jeremy Heyl and Fabio La Monaca and Christian Malacaria and Herman L. Marshall and Fabio Muleri and Alexander A. Mushtukov and Maura Pilia and Daniele Rogantini and Valery F. Suleimanov and Roberto Taverna and Fei Xie and Iván Agudo and Lucio A. Antonelli and Luca Baldini and Wayne H. Baumgartner and Ronaldo Bellazzini and Stefano Bianchi and Stephen D. Bongiorno and Raffaella Bonino and Alessandro Brez and Niccolò Bucciantini and Fiamma Capitanio and Simone Castellano and Elisabetta Cavazzuti and Chien-Ting Chen and Stefano Ciprini and Enrico Costa and Alessandra De Rosa and Ettore Del Monte and Laura Di Gesu and Niccolò Di Lalla and Immacolata Donnarumma and Michal Dovčiak and Steven R. Ehlert and Teruaki Enoto and Yuri Evangelista and Sergio Fabiani and Riccardo Ferrazzoli and Javier A. Garcia and Shuichi Gunji and Kiyoshi Hayashida and Wataru Iwakiri and Svetlana G. Jorstad and Philip Kaaret and Vladimir Karas and Takao Kitaguchi and Jeffery J. Kolodziejczak and Henric Krawczynski and Luca Latronico and Ioannis Liodakis and Simone Maldera and Alberto Manfreda and Frédéric Marin and Andrea Marinucci and Alan P. Marscher and Giorgio Matt and Ikuyuki Mitsuishi and Tsunefumi Mizuno and Michela Negro and Chi-Yung Ng and Stephen L. O’Dell and Nicola Omodei and Chiara Oppedisano and Alessandro Papitto and George G. Pavlov and Abel L. Peirson and Matteo Perri and Melissa Pesce-Rollins and Pierre-Olivier Petrucci and Andrea Possenti and Simonetta Puccetti and Brian D. Ramsey and John Rankin and Ajay Ratheesh and Oliver J. Roberts and Roger W. Romani and Carmelo Sgrò and Patrick Slane and Paolo Soffitta and Gloria Spandre and Rashid A. Sunyaev and Douglas A. Swartz and Toru Tamagawa and Fabrizio Tavecchio and Yuzuru Tawara and Allyn F. Tennant and Nicholas E. Thomas and Francesco Tombesi and Alessio Trois and Roberto Turolla and Jacco Vink and Martin C. Weisskopf and Kinwah Wu and Silvia Zane and IXPE Collaboration}, title = {IXPE Observations of the Quintessential Wind-accreting X-Ray Pulsar Vela X-1}, year = {2023}, journal = {DOAJ}, doi = {10.3847/2041-8213/acc391}, url = {https://doi.org/10.3847/2041-8213/acc391}, }

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3847/2041-8213/acc391
Akses: Open Access ✓