The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A

Shuo Kong; Volker Ossenkopf-Okada; Héctor G. Arce; John Bally; Álvaro Sánchez-Monge; Peregrine McGehee; Sümeyye Suri; Ralf S. Klessen; John M. Carpenter; Dariusz C. Lis; Fumitaka Nakamura; Peter Schilke; Rowan J. Smith; Steve Mairs; Alyssa Goodman; María José Maureira

doi:10.3847/1538-4357/abc687

The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A

Shuo Kong, Volker Ossenkopf-Okada, Héctor G. Arce, John Bally, Álvaro Sánchez-Monge, Peregrine McGehee, Sümeyye Suri, Ralf S. Klessen, John M. Carpenter, Dariusz C. Lis, Fumitaka Nakamura, Peter Schilke, Rowan J. Smith, Steve Mairs, Alyssa Goodman, María José Maureira

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

A unique filament is identified in the Herschel maps of the Orion A giant molecular cloud. The filament, which we name the Stick, is ruler-straight and at an early evolutionary stage. Transverse position–velocity diagrams show two velocity components closing in on the Stick. The filament shows consecutive rings/forks in C¹⁸O (1−0) channel maps, which is reminiscent of structures generated by magnetic reconnection. We propose that the Stick formed via collision-induced magnetic reconnection (CMR). We use the magnetohydrodynamics code Athena++ to simulate the collision between two diffuse molecular clumps, each carrying an antiparallel magnetic field. The clump collision produces a narrow, straight, dense filament with a factor of >200 increase in density. The production of the dense gas is seven times faster than freefall collapse. The dense filament shows ring/fork-like structures in radiative transfer maps. Cores in the filament are confined by surface magnetic pressure. CMR can be an important dense-gas-producing mechanism in the Galaxy and beyond.

Original language	English
Article number	80
Number of pages	28
Journal	Astrophysical Journal
Volume	906
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/abc687
Publication status	Published - 11 Jan 2021

Access to Document

10.3847/1538-4357/abc687

Kong-2021-The-CARMA-NRO-Orion-Survey-ApJ-AAM
Copyright © 2021. The American Astronomical Society. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.3847/1538-4357/abc687.
Accepted author manuscript, 15.5 MB

http://arxiv.org/abs/2011.00183

The CARMA-NRO Orion Survey: Filament Formation via Collision-Induced Magnetic Reconnection -- The Stick in Orion A (dataset)
Smith, R. J. (Creator), Goverment of Canada, 2020
https://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/search/?collection=JCMT&Plane.calibrationLevel=0&noexec=true
Dataset

Cite this

Kong, S., Ossenkopf-Okada, V., Arce, H. G., Bally, J., Sánchez-Monge, Á., McGehee, P., Suri, S., Klessen, R. S., Carpenter, J. M., Lis, D. C., Nakamura, F., Schilke, P., Smith, R. J., Mairs, S., Goodman, A., & Maureira, M. J. (2021). The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A. Astrophysical Journal, 906(2), Article 80. https://doi.org/10.3847/1538-4357/abc687

@article{529cb64e95d94cbab116ccf8c6bc0c58,

title = "The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A",

abstract = "A unique filament is identified in the Herschel maps of the Orion A giant molecular cloud. The filament, which we name the Stick, is ruler-straight and at an early evolutionary stage. Transverse position–velocity diagrams show two velocity components closing in on the Stick. The filament shows consecutive rings/forks in C18O (1−0) channel maps, which is reminiscent of structures generated by magnetic reconnection. We propose that the Stick formed via collision-induced magnetic reconnection (CMR). We use the magnetohydrodynamics code Athena++ to simulate the collision between two diffuse molecular clumps, each carrying an antiparallel magnetic field. The clump collision produces a narrow, straight, dense filament with a factor of >200 increase in density. The production of the dense gas is seven times faster than freefall collapse. The dense filament shows ring/fork-like structures in radiative transfer maps. Cores in the filament are confined by surface magnetic pressure. CMR can be an important dense-gas-producing mechanism in the Galaxy and beyond.",

author = "Shuo Kong and Volker Ossenkopf-Okada and Arce, {H{\'e}ctor G.} and John Bally and {\'A}lvaro S{\'a}nchez-Monge and Peregrine McGehee and S{\"u}meyye Suri and Klessen, {Ralf S.} and Carpenter, {John M.} and Lis, {Dariusz C.} and Fumitaka Nakamura and Peter Schilke and Smith, {Rowan J.} and Steve Mairs and Alyssa Goodman and Maureira, {Mar{\'i}a Jos{\'e}}",

note = "Funding: European Research Council via the ERC Synergy Grant ECOGAL (grant 855130) (R.S.K.). S. Suri acknowledges support from the European Research Council under the Horizon 2020 Framework Program via the ERC Consolidator Grant CSF-648405. R.J.S. acknowledges funding from an STFC ERF (grant ST/N00485X/1).",

year = "2021",

month = jan,

day = "11",

doi = "10.3847/1538-4357/abc687",

language = "English",

volume = "906",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Kong, S, Ossenkopf-Okada, V, Arce, HG, Bally, J, Sánchez-Monge, Á, McGehee, P, Suri, S, Klessen, RS, Carpenter, JM, Lis, DC, Nakamura, F, Schilke, P, Smith, RJ, Mairs, S, Goodman, A & Maureira, MJ 2021, 'The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A', Astrophysical Journal, vol. 906, no. 2, 80. https://doi.org/10.3847/1538-4357/abc687

TY - JOUR

T1 - The CARMA-NRO Orion Survey

T2 - filament formation via collision-induced magnetic reconnection - the stick in Orion A

AU - Kong, Shuo

AU - Ossenkopf-Okada, Volker

AU - Arce, Héctor G.

AU - Bally, John

AU - Sánchez-Monge, Álvaro

AU - McGehee, Peregrine

AU - Suri, Sümeyye

AU - Klessen, Ralf S.

AU - Carpenter, John M.

AU - Lis, Dariusz C.

AU - Nakamura, Fumitaka

AU - Schilke, Peter

AU - Smith, Rowan J.

AU - Mairs, Steve

AU - Goodman, Alyssa

AU - Maureira, María José

N1 - Funding: European Research Council via the ERC Synergy Grant ECOGAL (grant 855130) (R.S.K.). S. Suri acknowledges support from the European Research Council under the Horizon 2020 Framework Program via the ERC Consolidator Grant CSF-648405. R.J.S. acknowledges funding from an STFC ERF (grant ST/N00485X/1).

PY - 2021/1/11

Y1 - 2021/1/11

N2 - A unique filament is identified in the Herschel maps of the Orion A giant molecular cloud. The filament, which we name the Stick, is ruler-straight and at an early evolutionary stage. Transverse position–velocity diagrams show two velocity components closing in on the Stick. The filament shows consecutive rings/forks in C18O (1−0) channel maps, which is reminiscent of structures generated by magnetic reconnection. We propose that the Stick formed via collision-induced magnetic reconnection (CMR). We use the magnetohydrodynamics code Athena++ to simulate the collision between two diffuse molecular clumps, each carrying an antiparallel magnetic field. The clump collision produces a narrow, straight, dense filament with a factor of >200 increase in density. The production of the dense gas is seven times faster than freefall collapse. The dense filament shows ring/fork-like structures in radiative transfer maps. Cores in the filament are confined by surface magnetic pressure. CMR can be an important dense-gas-producing mechanism in the Galaxy and beyond.

AB - A unique filament is identified in the Herschel maps of the Orion A giant molecular cloud. The filament, which we name the Stick, is ruler-straight and at an early evolutionary stage. Transverse position–velocity diagrams show two velocity components closing in on the Stick. The filament shows consecutive rings/forks in C18O (1−0) channel maps, which is reminiscent of structures generated by magnetic reconnection. We propose that the Stick formed via collision-induced magnetic reconnection (CMR). We use the magnetohydrodynamics code Athena++ to simulate the collision between two diffuse molecular clumps, each carrying an antiparallel magnetic field. The clump collision produces a narrow, straight, dense filament with a factor of >200 increase in density. The production of the dense gas is seven times faster than freefall collapse. The dense filament shows ring/fork-like structures in radiative transfer maps. Cores in the filament are confined by surface magnetic pressure. CMR can be an important dense-gas-producing mechanism in the Galaxy and beyond.

U2 - 10.3847/1538-4357/abc687

DO - 10.3847/1538-4357/abc687

M3 - Article

SN - 0004-637X

VL - 906

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 80

ER -

The CARMA-NRO Orion Survey: filament formation via collision-induced magnetic reconnection - the stick in Orion A

Abstract

Access to Document

Fingerprint

Datasets

The CARMA-NRO Orion Survey: Filament Formation via Collision-Induced Magnetic Reconnection -- The Stick in Orion A (dataset)

Cite this