Results 1 to 10 of about 753 (260)

A Monopolar Jet from Protostar HOPS 10: Evidence for Asymmetric Magnetized Launching

The Astronomical Journal
A fundamental challenge in star formation is understanding how a protostar accretes mass from its circumstellar disk while removing excess angular momentum.
Somnath Dutta
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Jet-Driven Formation of Bipolar Rings in Planetary Nebulae: Numerical Simulations Inspired by NGC 1514

The Open Journal of Astrophysics
We conduct three-dimensional hydrodynamical simulations of jets launched into a dense shell, reproducing two rings in a bipolar structure that resemble the two dusty rings of the planetary nebula (PN) NGC 1514.
Muhammad Akashi, Ealeal Bear, Noam Soker
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Gamma-Ray Burst Timing: Decoding the Hidden Slow Jets in GRB 060729

The Astrophysical Journal Letters
Gamma-ray bursts (GRBs) are luminous stellar explosions characterized by the ejection of relativistic jets. This work proposes a novel paradigm to study these GRB jets. By analyzing the timing information of prompt pulses and X-ray flares, in conjunction
Jin-Jun Geng, Ding-Fang Hu, Hao-Xuan Gao, Yi-Fang Liang, Yan-Long Hua, Guo-Rui Zhang, Tian-Rui Sun, Bing Li, Yuan-Qi Liu, Fan Xu, Chen Deng, Chen-Ran Hu, Ming Xu, Yong-Feng Huang, Miao-Miao Zhang, Min Fang, Jing-Zhi Yan, Tao An, Xue-Feng Wu   +18 more
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Influence of Jets on [O iii] Extensions in Green Pea/Bean Galaxies

The Astrophysical Journal
We present a study investigating the influence of jets on galaxies exhibiting strong [O iii ] λ 5007 emission, known as Green Peas and Green Beans . Our sample comprised 12 nearby sources ( z ∼ 0.04–0.1, six with jets and six without jets) with high [O ...
Harshitha K. Bhat, Andreas Eckart, Persis Misquitta, Monica Valencia-S., Madeleine Yttergren, Anton Zensus   +5 more
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Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 μm Spectral Mapping of Five Young Protostars

The Astrophysical Journal
Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 μ m spectral cubes of five young protostars with luminosities of 0.2–10,000 L _⊙ in their primary accretion phase.
Samuel A. Federman, S. Thomas Megeath, Adam E. Rubinstein, Robert Gutermuth, Mayank Narang, Himanshu Tyagi, P. Manoj, Guillem Anglada, Prabhani Atnagulov, Henrik Beuther, Tyler L. Bourke, Nashanty Brunken, Alessio Caratti o Garatti, Neal J. Evans II, William J. Fischer, Elise Furlan, Joel D. Green, Nolan Habel, Lee Hartmann, Nicole Karnath, Pamela Klaassen, Hendrik Linz, Leslie W. Looney, Mayra Osorio, James Muzerolle Page, Pooneh Nazari, Riwaj Pokhrel, Rohan Rahatgaonkar, Will R. M. Rocha, Patrick Sheehan, Katerina Slavicinska, Thomas Stanke, Amelia M. Stutz, John J. Tobin, Lukasz Tychoniec, Ewine F. Van Dishoeck, Dan M. Watson, Scott Wolk, Yao-Lun Yang   +38 more
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PROJECT-J: The Shocking H2 Outflow from HH 46

The Astrophysical Journal
We analyze the H _2 emission observed in the HH 46 Class I system as part of PROtostellar JEts Cradle Tested with JWST (PROJECT-J), to investigate the origin and excitation of the warm molecular outflow. We used NIRSpec and MIRI spectral maps (1.6–27.9 μ
Maria Gabriela Navarro, Brunella Nisini, Teresa Giannini, Patrick J. Kavanagh, Alessio Caratti o Garatti, Simone Antoniucci, Hector G. Arce, Francesca Bacciotti, Sylvie Cabrit, Deirdre Coffey, Catherine Dougados, Jochen Eislöffel, Patrick Hartigan, Alberto Noriega- Crespo, Linda Podio, Ewine F. van Dishoeck, Emma T. Whelan   +16 more
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The Outflow of The Protostar in B335. I.

The Astronomical Journal
The isolated globule B335 contains a single, low-luminosity Class 0 protostar associated with a bipolar nebula and outflow system seen nearly perpendicular to its axis.
Klaus W. Hodapp, Laurie L. Chu, Thomas Greene, Michael R. Meyer, Doug Johnstone, Marcia J. Rieke, John Stansberry, Martha Boyer, Charles Beichman, Scott Horner, Tom Roellig, George Rieke, Eric T. Young   +12 more
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Characterizing the Extended Molecular Hydrogen Winds in Protoplanetary Disks from the JWST Disk Infrared Spectroscopic Chemistry Survey

The Astrophysical Journal
We present a comprehensive analysis of extended H _2 emission from 34 protoplanetary disks observed with the JWST Disk Infrared Spectroscopic Chemistry Survey, supplemented by archival data.
Mayank Narang, Klaus M. Pontoppidan, Colette Salyk, Nicole Arulanantham, Geoffrey A. Blake, Andrea Banzatti, Joan Najita, Ilaria Pascucci, Jane Huang, Sebastiaan Krijt, Karin Öberg, Giovanni Rosotti, Till Kaeufer, Emma Dahl, L. Ilsedore Cleeves, Ke Zhang, Joel Green   +16 more
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Observational Properties of Nonthermal Emission from Relativistic Jets Escaping Active Galactic Nucleus Disks

The Astrophysical Journal
Relativistic jets launched from stellar-mass compact objects embedded in the accretion disk of an active galactic nucleus (AGN) can produce nonthermal emission upon successfully breaking out of the disk. In this paper, we present a comprehensive study of
Ken Chen, Zi-Gao Dai
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An Extremely Young Protostellar Core, MMS 1/OMC-3: Episodic Mass Ejection History Traced by the Micro SiO Jet

The Astrophysical Journal
We present ∼0.″2 (∼80 au) resolution observations of the CO(2–1) and SiO(5–4) lines made with the Atacama large millimeter/submillimeter array toward an extremely young intermediate-mass protostellar source ( t _dyn < 1000 yr), MMS 1 located in the Orion
Satoko Takahashi, Masahiro N. Machida, Mitsuki Omura, Doug Johnstone, Kazuya Saigo, Naoto Harada, Kohji Tomisaka, Paul T. P. Ho, Luis A. Zapata, Steve Mairs, Gregory J. Herczeg, Kotomi Taniguchi, Yuhua Liu, Asako Sato   +13 more
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